ArticlePDF AvailableLiterature Review

Lead pulling as a welfare concern in pet dogs: What canveterinary professionals learn from current research?

Authors:

Abstract

Veterinary professionals (VPs) are often the first source of advice for clients struggling with their dog's behaviour, and pulling on the lead is a commonplace undesirable behaviour VPs will encounter regularly in practice. Excluding bites, being pulled over while walking on a lead is the leading cause of non‐fatal dog‐related injuries in the UK. This narrative review investigates lead pulling as a welfare concern in pet dogs, highlighting aspects of the literature of particular interest to VPs. Lead pulling could negatively affect walk quality, frequency and duration, causing weight gain, while decreased environmental enrichment could trigger other undesirable behaviours. Aversive equipment to prevent lead pulling can cause pain, distress and injury, but even equipment considered humane can have welfare consequences. Punitive training methods could cause dogs stress, fear and anxiety and trigger aggressive behaviour. While these lead pulling outcomes are welfare concerns in themselves, they could also weaken dog–owner attachment, a risk factor in pet dog relinquishment. Given lead pulling could affect the welfare of patients in a VPs care, clinical implications and opportunities for client education are outlined. Educating clients on humane prevention and modification of lead pulling could make walks easier, safer and more enjoyable, with positive outcomes for clients, canine welfare and the practice.
Received: 25 November 2020 Revised: 23 January 2022 Accepted: 14 March 2022
DOI: 10.1002/vetr.1627
REVIEW
Lead pulling as a welfare concern in pet dogs: What can
veterinary professionals learn from current research?
Lesley Townsend1Laura Dixon2Louise Buckley1
1The Royal (Dick) School of Veterinary
Studies, University of Edinburgh,
Midlothian, Scotland, UK
2Animal and Veterinary Science Research
Group, Scotland’s Rural College, Ayr,
Scotland, UK
Correspondence
Lesley Townsend, The Royal (Dick) School of
Veterinary Studies, University of Edinburgh,
Midlothian, Scotland, UK.
Email: ltownsend@ed-alumni.net
Abstract
Veterinary professionals (VPs) are often the first source of advice for clients
struggling with their dog’s behaviour, and pulling on the lead is a common-
place undesirable behaviour VPs will encounter regularly in practice. Exclud-
ing bites, being pulled over while walking on a lead is the leading cause of
non-fatal dog-related injuries in the UK. This narrative review investigates
lead pulling as a welfare concern in pet dogs, highlighting aspects of the liter-
ature of particular interest to VPs.
Lead pulling could negatively affect walk quality, frequency and duration,
causing weight gain, while decreased environmental enrichment could trig-
ger other undesirable behaviours. Aversive equipment to prevent lead pulling
can cause pain, distress and injury, but even equipment considered humane
can have welfare consequences. Punitive training methods could cause dogs
stress, fear and anxiety and trigger aggressive behaviour. While these lead
pulling outcomes are welfare concerns in themselves, they could also weaken
dog–owner attachment, a risk factor in pet dog relinquishment.
Given lead pulling could affect the welfare of patients in a VPs care, clinical
implications and opportunities for client education are outlined. Educating
clients on humane prevention and modification of lead pulling could make
walks easier, safer and more enjoyable, with positive outcomes for clients,
canine welfare and the practice.
INTRODUCTION
Physical and behavioural health are intrinsic to pet
dog welfare, and behaviour changes may be veteri-
nary professionals’ (VPs) first indication of underlying
disease processes and broader welfare concerns.1
Left untreated, undesirable behaviours can compro-
mise health; for example, recall problems causing
accidents,2stress contributing to dermatitis,3lead
pulling causing injuries,4separation anxiety leading
to escape-related injuries5and wounds from inter-
dog aggression.6Undesirable behaviours damage
pet–owner attachment and are the leading cause of
relinquishment and euthanasia in pet dogs under
3 years old.7VPs are often the first source of advice
for clients struggling with their dog’s behaviour and
early interventions can prevent escalations.8Effec-
tive recommendations can increase compliance, not
just with behavioural therapies but also medical
treatments.9Thus, it is in VP’s interests to routinely
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© 2022 The Authors. Veterin ar y Re co rd published by John Wiley & Sons Ltd on behalf of British Veterinary Association.
discuss behaviour, as part of a holistic, preventative
healthcare approach.
VPs can augment this approach to patient care
by discussing with clients the importance of regu-
lar, appropriate walking.10 Walking is essential to pet
dog welfare, providing outlets for exercise,10 social
interactions,11 species-specific behaviours,12 appro-
priate challenges and pleasurable activities.13 While
research suggests owners recognise these benefits,13,14
15% of UK owners do not walk their dogs daily.15 Multi-
ple barriers and motivators may contribute, including
social and environmental constituents, but the most
influential factors are dogs themselves.
Breed, size, age,16 health and walking capacity17
are important walking incentives and disincentives
for owners, but the strength of attachment owners
feel towards their dogs is key.13,14,18–20 Owners report
wanting to meet their dog’s exercise needs and that
provision and participation in an activity their dog
enjoys provides motivation.13,14 However, owners of
Vet Rec. 2022;e1627. wileyonlinelibrary.com/journal/vetr 1of10
https://doi.org/10.1002/vetr.1627
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older, overweight or arthritic dogs may still be strongly
attached but find daily walks challenging,17 and unde-
sirable behaviour may affect the quality, frequency
and duration of walks owners can provide. Research
has focused on positive outcomes of dog walking for
humans13,14,16,20; negative outcomes of dog walking
are less clear.
Inappropriate socialisation is one such outcome,
now recognised as a pre-eminent welfare concern.21
During the first wave of the Covid-19 pandemic in
2020, UK and Spanish owners reportedly walked their
dogs on a lead more than they had previously.22,23
Some owners expressed concerns on-lead walks pro-
vided insufficient exercise, mental stimulation and
social outlets for their dogs.24 However, others fre-
quently report off-lead dog behaviour on walks
as problematic.20,21,25 Studies have found dogs—
particularly juveniles aged under 16 months25
are more likely to approach conspecifics when off-
lead.11 While off-lead interactions increased play
opportunities, they more than doubled the risk of
aggressive responding among dogs.25 Indeed, 13% of
UK dog owners, primary concern when walking is
fear of their dog being attacked by another dog.15
Despite acknowledging lead use curtails unwanted
behaviours, many dog owners still consider off-lead
walking integral to welfare,20,26 even when their dog
presents a risk to dogs, people and wildlife.27
Owners of off-lead dogs are less likely to pick
up after them,11 increasing risks of intraspecific and
zoonotic infection.28,29 Off-lead dogs killed approxi-
mately 15,000 sheep in the UK in 2016,30 costing farm-
ers over a million pounds, despite 64% erecting sig-
nage, and dog owners being liable to prosecution.30,31
In March 2021, an off-lead dog fatally injured a Thames
harbour seal in London, UK.32 Road traffic acci-
dents cause 12% of deaths in dogs under 3 years
old.7Lead use is a simple, affordable, immediate
intervention that can reduce conspecific aggression,25
zoonoses, intraspecies infections,29 death by injury7
and predation.26,28 Internationally, dog control laws
introduced to address these concerns33–37 mean it is
imperative owners are willing and able to walk their
dogs on a lead safely and humanely.
Excluding bites, being pulled over by a dog on-
lead while walking is the foremost cause of non-fatal
dog-related injuries to patients attending Accident &
Emergency departments in the UK.38 Over 12 months,
Cornwall NHS Trust reported 30 incidences of injuries
from lead use, prompting the British Society for
Surgery of the Hand to warn pet owners about the
dangers.39 Two large-scale US studies identified lead
pulling as a significant public health risk, particularly
for the elderly.40,41 Israeli military dog handlers had
significantly higher risks of injury than controls, where
other occupational hazards were controlled for.42 Lead
pulling has sparked litigation, awarding substantial
damages against the liable dog owner.43 While these
findings suggest lead pulling is a prolific public health
concern, surprisingly little is known about its impact
on pet dog welfare.
This narrative review explores potential risks to
welfare associated with lead pulling, highlighting
gaps in the current knowledge on this common-
place behaviour and recommending future research
avenues. Given VPs role in promoting welfare-centred
husbandry, training and equipment for dogs in their
care and the wider population, and that lead pulling is
a prolific training problem VPs are likely to encounter
in practice, welfare-centred recommendations for
client education are discussed.
DISCUSSION
Lead pulling and welfare
The 2020 UK PDSA Animal Wellbeing (PAW) report
found lead pulling to be the dog behaviour pet owners
most wanted to change (24%)15; perhaps because lead
pulling directly affects owner wellbeing daily, more
than fireworks fear (22%) for example.15 However,
owners may be unaware that lead pulling has serious
implications for their dog’s welfare. Lead pulling itself,
and equipment and training used to address it, may
have direct and indirect consequences for welfare,
including pain, fear, injury, disease, reduced outlets
for canine behavioural expression and diminished
pet–owner attachment. Understanding the potential
risks of lead pulling to an individual patient’s welfare
can inform the VPs’ approach to client education.
Reduced exercise
Of owners who walked their dogs for less than 30 min-
utes daily, 10% cited their dog’s behaviour on walks
as the reason15; lead pulling could be one such
behaviour. Walking and ‘excitable’ behaviours were
negatively correlated in Australian pet dogs,44 and
‘obedient’ Argentine dogos received longer walks than
those deemed less obedient.45 While homogenous
sampling limits generalisability of these findings, it
seems probable lead pulling might impact the qual-
ity, duration and frequency of walks dogs receive. If
dogs that pull are walked less, or not at all, they could
be more prone to resultant weight gain. Overweight
and obese dogs exercise less46 and live shorter,47
poorer quality lives,48 with increased risk of comorbid
pathologies.49
Multiple studies detect a relationship between
reduced walking and weight gain in dogs,10,46,50–53
although conflicting methodologies, age, neutering,
diet, owner behaviour, breed and genetics confound
the results. In one large UK study (n=11,154), a
relationship between overweight, exercise and unde-
sirable behaviours was identified.54 Overweight dogs
were walked less46 and more likely to flee, be fear-
ful, aggressive, or pull on lead.54 However, the direc-
tion of the relationship remains unclear; undesirable
behaviours such as lead pulling may prevent owners
from walking their dogs, resulting in weight gain, or
Veteri nary Record 3of10
weight gain may prevent owners walking their dogs,
resulting in undesirable behaviours.
Studies on the effects of exercise on undesirable
behaviours suggest it is not exercise per se but its qual-
ity that affects behaviour. Gentle, outdoor, accompa-
nied exercise lowered stress and improved behaviour
in shelter dogs,55 while kennel pacing increased in
shelter dogs after running on-lead.56 Olfactory stim-
ulation induced calmer states in shelter dogs,57,58
while high-intensity exercise increased cortisol in sled
dogs.59 It seems plausible high-intensity activity such
as lead pulling could elevate heart rate, blood pressure
and corticosteroids in dogs,59 resulting in heightened
arousal; manifesting behaviourally as alertness, rest-
lessness and hypervigilance.60
Dogs are a social and olfactory species61 and
sniffing is positively correlated with optimism62 and
calm behavioural states.60 Regular walking may be
a pet dog’s only opportunity to engage in vital
canine behaviours such as sniffing, social interac-
tions and scent marking.12,62 Lead pulling could
reduce access to these, triggering other undesir-
able behaviours61,63—digging, destruction, excessive
vocalisation and escape attempts. Furthermore, if lead
pulling causes, or is a sequela of, acute or chronic
stress and accompanying hyperarousal, dogs that pull
might be less likely to engage in species-specific
behaviours when walking. Lead tension could also
limit a dog’s behavioural responses to stimuli, increas-
ing barrier frustration; a phenomenon associated with
redirected aggression.64 Lead pulling could then be
symptomatic of, or a precursor to, a broader suite
of stress or frustration-related behaviours on walks—
excessive vocalisation, hyperarousal, dog and human-
directed aggression. Thus, VPs should take reports of
lead pulling seriously, as they may indicate deeper wel-
fare concerns for patients.
Training methods
Training loose lead walking may require more time
and skill than owners anticipate65 and the desire for
‘quick fixes’ could prompt owners to choose punitive
training66 which appears effective at face value.
Evidence on the efficacy of punishment (lead cor-
rections/electronic stimuli/verbal corrections) and
reward-based (food/toys/praise) training methods is
contradictory. Training methods utilising positive
reinforcement—whereby a rewarding stimulus follows
a desirable behaviour—were as effective as punish-
ment in some studies;67–69 however, Schalke et al.70
found opposing effects, aversives were more effec-
tive for learning. From a welfare standpoint, effi-
cacy is not the sole consideration when evaluating
training methods. While punitive training can sup-
press behaviour, it may cause injury,71 aggression,72
fearfulness,73 anxiety and stress74 in dogs; negative
outcomes which may be heightened when punish-
ment is poorly applied.67 Furthermore, owners who
utilise punitive training are reportedly less satisfied
with their dog’s ability to walk on lead than those who
use positive reinforcement.68,75 However, owners who
usepunitivemethodsmaybemoreinclinedtodosoin
the first place, precisely because their dog is difficult to
walk.
The dog training and behaviour industry is unreg-
ulated and, while numerous self-regulatory organ-
isations exist, standards and methods vary widely
between them and membership and adherence to eth-
ical codes are voluntary. Furthermore, ongoing debate
exists between professionals regarding punishment
versus reward-based training methods. Misconcep-
tions of dominance and pack theory persist among
VPs66 and paraprofessionals76 alike. This inconsistent
messaging likely confuses owners who may imple-
ment ineffective or dangerous advice72 from hobby-
ists, websites, television or social media.15 Thus, VPs
have a crucial role to play in promoting evidence-
based, humane training methods for lead pulling, in
accordance with the British Small Animal Veterinary
Association77 and the American Veterinary Society of
Animal Behaviour78 position statements on punish-
ment in dog training.
Equipment
Lead pulling has spawned a plethora of equipment
designed to prevent and modify it. While some are
at worst ineffective, others could cause conditioned
negative associations,79 stress,80 ophthalmic4and
orthopaedic damage81 and even death.71
E-collars utilise negative reinforcement to train lead
walking; an electronic stimulus applied when the dog
walks out of position, is removed when they return to
position by the handler’s leg.82 The risk here is the dog
associating the aversive stimulus with people, animals
or things in their environment rather than lead pulling,
resulting in fear-based aggression.79 That risk is exac-
erbated by pet owners poor timing, misunderstand-
ing of conditioning, and potential applying the elec-
tronic stimulus at levels exceeding requirements.67
While some trainers advocate for e-collars as effec-
tive, positive reinforcement has been shown to be as
successful when training.67 However, there is no cur-
rent evidence on the specific efficacy of e-collars for
lead pulling. Research on the welfare implications of
e-collars has prompted varying restrictions on them;
from none in some countries to bans on their use
and/or sale in others.83 The European Society of Vet-
erinary Clinical Ethology84 and the BVA85 recommend
against using e-collars in dog training.
Less is known about the physical and behavioural
outcomes of prong (pinch) and choke collars when
used to train loose lead walking. These also use neg-
ative reinforcement; pressure is exerted on the dog’s
neck when they pull and released when they walk on
a loose lead. Prong collars were found to elicit more
pronounced behavioural indicators of stress than
e-collars or a verbal cue.70 Owners using choke and
prong collars reported lower satisfaction levels with
their dog’s lead-walking behaviour than owners who
did not use those collars,75 although less satisfied
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owners may be more inclined to use them in the first
instance. One death by strangulation resulting from
excessive force on a choke chain has been reported,
but the dog was suspended from, rather than pulling
on the chain; albeit only for 60 seconds.71 While
research on the welfare outcomes of lead pulling on a
choke or prong collar are lacking, studies highlighting
the risks of pulling on a flat collar suggest a smaller
contact area—such as a chain or metal prongs—could
concentrate pressure and force in that area, increasing
the potential for nerve and skin damage.86
Anecdotally, owners report their dogs cough and
hack while pulling on a collar and lead, and research
supports the hypothesis that lead pulling could cause
neck injuries. In Hunter et al.,86 three different flat
collars exerted sufficient pressure to cause ischaemic
necrosis in dogs. However, the small sample (n=8)
consisted of dogs of varying coat and conformation,
which could have influenced the results. Surprisingly,
padded collars exerted the highest pressure; perhaps,
the authors suggest, because the convex design con-
centrates pressure and force around the neck.
Carter et al.87 used a simulated neck model to mea-
sure collar pressure on a dog’s neck under consistent
(lead pulling) and acute (lead jerking) force.73 While a
plastic model cannot replicate responses of neck tis-
sue to pressure, or account for intraspecies variabil-
ity, every collar tested created pressure exceeding that
which causes tissue damage in humans. Pauli et al.4
found dogs experienced significantly higher intraocu-
lar pressure (IOP) when force was applied to a collar
than a harness and suggested these effects could be
heightened when actively lead pulling, due to the Val-
salva manoeuvre. Persistently elevated IOP increases
the likelihood of visual field loss in humans,4suggest-
ing dogs that pull on lead might be at similar risk.
Pulling on a collar and lead has been shown to
increase the risk of permanent tracheal, laryngeal,
oesophageal and ophthalmic damage in all dogs4,88
but could be particularly problematic in brachy-
cephalic breeds where airway compromise89 and oph-
thalmic problems90 are endemic. With the current
popularity of brachycephalic breeds,91 VPs have a
responsibility to educate clients on the heightened
risk of lead pulling and the safest equipment choices
available for them. Harnesses are now widely recom-
mended for brachycephalic dogs92 and limited evi-
dence suggests they are a superior choice when eye
and respiratory health are particular concerns.
Broadly speaking, there are two styles of harness—
those with a chest strap forming a Y-shape above the
dog’s shoulders (Figure 1) and those with a chest strap
sitting across the dog’s chest (Figure 2). Both styles
may clip either between the shoulders, or on the ster-
num, with some attaching at both points. Lafuente
et al.81 explored the hypothesis that harnesses with
a strap sitting across the dog’s chest (described as
‘restrictive’ by the authors); might impair shoulder
and thoracic limb extension more than harnesses that
form a Y-shape above the dog’s shoulder. Their find-
ings did not support this hypothesis; both styles of har-
nesses decreased shoulder extension in dogs walking
FIGURE 1 A non-restrictive Y-shaped harness, which clips at
the back. Some styles feature an additional clip at the sternum
FIGURE 2 A restrictive harness which crosses the dog’s
shoulder joint and clips at the sternum. Some styles also clip at the
back
on a treadmill. It could be hypothesised pulling on a
harness while moving at different speeds, across differ-
ent substrates outdoors, produces greater effects than
those in the study. Furthermore, the cohort was small
and varied (n=9), so conformation, function, gait
or coat could have confounded results. The harnesses
were altered with additional weights possibly com-
promising their functional integrity. While acknowl-
edging this flawed methodology, the authors suggest
prolonged use of what they describe as restrictive
harnesses could potentially cause tendinopathies.81
Grainger et al.88 found no differences between flat
collar and harness use on either behavioural indica-
tors of canine stress (lip licking, panting, pawing, low-
ered body position, etc.) or behavioural measures of
restricted movement (i.e. sniffing, tracking and stop-
ping). However, the study sample was small (n=30)
and the harness manufacturer funded the research.
More recently, Shih et al.93 found dogs pulled sig-
nificantly harder in back connection harnesses than
Veteri nary Record 5of10
neck-collars in trials with food but not with toys. This
suggests that for larger, stronger dogs that pull or those
with comorbid behaviours requiring modification,
headcollars might be more effective than harnesses.
Headcollars comprise a strap around the dog’s muz-
zle below their eyes that interconnects with a neck
strap to secure the fit. A lead is attached either
beneath the dog’s chin or at the back of their head.
Anecdotally, owners report poor tolerance of head-
collars by dogs, if applied without prior desensiti-
sation, resulting in nose pawing, rubbing face and
muzzle against surfaces, refusing to walk or thrash-
ing on lead. These behavioural responses are in them-
selves a welfare concern being acute stress indicators94
and potentially causing injury to the owner, dog or
both. They may also cause owners distress, reduc-
ing compliance with headcollar use and subsequently
exercise or behaviour modification protocols.95 Haug
et al.95 found dogs habituated to headcollars with
just intermittent use over 6 weeks, suggesting adverse
behavioural responses to headcollars may be partly
due to novelty; however, the sample did not include
dogs that pulled on the lead.
Ogburn et al.96 observed that naïve dogs pawed their
noses and fought the lead more frequently in head
than neck collars. However, physiological stress indi-
cators did not vary between dogs walked on either,
perhaps because physical and behavioural indicators
of stress are not always associated, as cortisol fluctua-
tions are multifactorial.1
Dogs were reportedly easier to control and more
‘subordinate’ in headcollars, but the authors, interpre-
tations of dog’s behavioural motivations were based
on now debunked dominance theory, which could
have prompted misinterpretations of behavioural sup-
pression as compliance.
Inappropriate equipment can be detrimental to pet
dog welfare. Clients may find choosing the right equip-
ment overwhelming and ask VPs for recommenda-
tions. Given the limited evidence surrounding the
behavioural and physical impacts of equipment for
dogs that pull, critical evaluation of the potential risks
and benefits of each, is key to make welfare-centred
recommendations.
Strength of owner attachment
An indirect impact of lead pulling on welfare is a
potential weakening of pet–owner attachment. Sev-
eral of the aforementioned outcomes—comorbid
undesirable behaviours, aversive equipment75 and
punitive training97— have inverse relationships with
pet–owner attachment, although these are correla-
tional rather than causal. Importantly, owners who
walk their dogs consistently report higher attachment
than owners who do not.19,20,98 Whether dog walk-
ing increases attachment, attachment increases dog
walking, or a bidirectional relationship exists remains
unclear. Regardless, weakened attachment is a risk
for relinquishment and euthanasia, with undesirable
behaviours being an aggravating or perhaps initiating
factor.75 It is imperative VP’s proactively advise on
lead pulling prevention and modification, to preserve
the human animal bond, a key component of owner
retention.
AVENUES FOR FUTURE RESEARCH
Approximately 90% of dogs exhibit undesirable
behaviours54 and as many as 82% pull on lead,99
but the relationship between lead pulling and pet dog
welfare has yet to be studied. Research is needed to
quantify lead pulling in pet dog populations and its
effect on walk frequency and duration. The impact of
lead pulling on species typical behaviours on walks
warrants observational analysis, as engagement in
these may indicate positive welfare while walking and
in broader terms.
Surprisingly little is known about equipment own-
ers use to walk dogs and why, and the physical and
behavioural outcomes of those for dogs that pull. A
leash tension meter (see Shih et al.100), which mea-
sures lead pulling and whether the handler, dog or
both are exerting pressure, could provide an objective
means of measuring equipment and training efficacy.
Identifying possible risk and protective factors—
whether breeds selectively bred for carting and sled-
ding pull more frequently, whether life stages or
sourcing are aggravating factors and whether puppy
class attendance is preventative—could inform best
practice approaches for VPs. If a relationship exists
between lead pulling and aggression on walks, iden-
tifying it is vital, given aggression is a primary cause of
relinquishment in pet dogs.101
CLINICAL IMPLICATIONS
Puppy consultations present excellent opportunities
to discuss lead pulling, associated welfare risks and
proactive prevention. These should be discussed—
regardless of breed—but with specific considera-
tion for brachycephalics.92 Recommendations could
form a dog-walking ‘toolkit’102 alongside informa-
tion on equipment, training, exercise, weight man-
agement and legal obligations. While 79% of owners
of 9-month-old dogs reported lead-pulling behaviour,
only 5% of them considered it problematic,103 indi-
cating some owners underestimate the challenges
and welfare implications lead pulling may present
as their dog matures. By adulthood, lead pulling
may already be chronic, with a well-established
reinforcement history—thus early interventions are
critical.
Owners may choose aversive equipment out of
safety concerns while walking, being unaware of
associated welfare risks.72 As certain equipment may
be more effective and appropriate for some dogs
than others, a risk assessment, considering the indi-
vidual dogs behavioural and physical needs and
the owner’s abilities,102 is essential before making
recommendations (Figure 3). Selling equipment in
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FIGURE 3 A simple risk assessment tool for discussing dog-walking equipment with clients
practice creates opportunities for client education
while generating revenue and footfall.104
Teaching owners to fit and use equipment reduces
stress, frustration and injury risk, increasing compli-
ance and satisfaction and enhancing welfare.95 For
example, using a double-ended lead, attached to both
the headcollar and the neck collar or harness can
increase safety and control, while reducing force on
the head and neck. A dog may not tolerate equipment
simply because it is humane, and stress signalling
should be observed during fittings, ensuring the dog is
not just enduring the item but is comfortable wearing
it. Desensitisation and counter conditioning protocols
can increase acceptance; associating equipment with
rewards, in gradual approximations at a tolerable level
for the individual dog.105 Desensitisation protocols
can be lengthy, so managing client expectations is
vital, but owners are more likely to use equipment
their dog finds comfortable.95 If a dog must wear
something every day, the goal from a welfare per-
spective should be willing compliance resulting in
enriched walking experiences for both species, rather
than simply suppression of lead pulling. Guides to
desensitisation are available from Denenberg106 and
Dogs Trust UK.107 Figures 4and 5illustrate simple
techniques to utilise when fitting equipment.
Equipment is an important consideration in safe
handling practice where slip leads are used to move
dogs quickly. Dogs that are stressed in clinic105 may
pull on a slip lead, exerting concentrated pressure
around the neck. VPs should consider alternatives, or
use the client’s equipment, particularly for dogs with
compromised airways.
Least aversive/minimally invasive, reward-based
training methods should be utilised for lead pulling,
as these support good welfare.68 This is critical as pet
Veteri nary Record 7of10
FIGURE 4 Stuffed food toys can be used to enhance
acceptance of headcollars and harnesses when fitting
FIGURE 5 Scattering food can briefly station a dog while
fitting or putting on a harness
owners’ poor skills and timing79 may aggravate nega-
tive outcomes of punitive techniques. Where in-house
training expertise is lacking, VPs can refer clients to
behaviourists and trainers accredited with the Animal
Behaviour and Training Council.108
Handouts, books and posters in the waiting room104
are an efficient means of providing advice to a cap-
tive audience of owners. Dogs Trust109 and PDSA110
have free resources on lead training using posi-
tive reinforcement. If severe lead pulling prohibits
walking, other outlets—private hire fields, playing
tug, enrichment and scent work—should be rec-
ommended to fill the behavioural void short-term
reduced exercise likely brings, while training is under-
taken. The book ‘No Walks, No Worries’111 is an
excellent resource to stock in practice for reference
or sale.
Annual vaccinations, puppy parties and weight loss
clinics are good opportunities to discuss behaviour
and training concerns. A genuine, non-judgemental
interest in their dog’s welfare builds client trust and
adherence with guidance.112 Working collaboratively
with owners to resolve lead pulling could improve gen-
eral compliance, generating return business and refer-
rals for the practice.
SUMMARY
The evidence presented here suggests a relation-
ship exists between pulling on the lead and pet dog
welfare, the nature and scope of which warrants
empirical study. VPs should be cognisant of poten-
tial risks lead pulling poses to the individual dog
and educate clients on humane means of mitigating
them. Fostering enjoyable, symbiotic walking experi-
ences can increase enrichment and exercise, reduc-
ing stress and aversion for pet dogs, while improving
owner attachment, collectively contributing to higher
welfare.
ACKNOWLEDGEMENTS
This review was originally undertaken as part of the
lead author’s MSc in Clinical Animal Behaviour, Royal
(Dick) School of Veterinary Studies at the University of
Edinburgh.
FUNDING INFORMATION
The authors received no specific funding for this work.
CONFLICT OF INTEREST
The authors declare there are no competing interests
to report.
ETHICS STATEMENT
No animal or human subjects were used in the cre-
ation or context of this narrative review, thus no ethical
permission was required.
AUTHOR CONTRIBUTIONS
All three authors made substantial contributions to
conception, drafting and revision of this manuscript
and have given final approval for this version to be
published.
DATA AVAILABILITY STATEMENT
Data sharing not applicable to this article as no
datasets were generated or analysed during the cur-
rent study.
ORCID
Lesley Townsend https://orcid.org/0000-0002-3214-
5146
Laura Dixon https://orcid.org/0000-0002-1781-
8795
Louise Buckley https://orcid.org/0000-0003-1557-
4341
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How to cite this article: Tow nse n d L, Dix o n L,
Buckley L. Lead pulling as a welfare concern in
pet dogs: What can veterinary professionals
learn from current research?. Vet Rec.
2022;e1627. https://doi.org/10.1002/vetr.1627
... This might be particularly important to brachycephalic breeds like French Bulldogs and Pugs, which have gained popularity in the last few years. 14 This review aims to approach the subject of dogwalking injuries considering both the human and the animal subject. 15 Our objectives were to analyze the existing literature, report on the most salient findings, and identify gaps in the type and quantity of information collected during emergency room visits. ...
Article
The topic of dog-walking injuries has recently gained notoriety through major media outlets in North America, including the Washington Post, NPR , and US News and World Report . In this review, we have compiled data from the main studies published in the past 2 decades that assess the incidence, demographics, and injury patterns related to dog leash walking. The available papers indicate that dog leash–related injuries have increased, particularly among women over 65. The most common causes of injury are dog-pulling behavior, which can result in tripping or tangling, with or without a fall, as well as upper extremity injuries. However, there is a lack of information regarding dog size, breed, training status, the type of leash used at the time of injury, and the role each factor may have in the incidence of injuries. The available data did not allow for evaluation of the impact of weather conditions on injury incidence. Information about the involved dogs, type of lead device, and weather conditions could be useful in identifying risk factors associated with dog ownership and guide prospective pet owners and their families to mitigate the risk of injuries.
Article
Background Leash pulling is a commonly reported problem behavior for dog owners, as a result, a variety of leash equipment types are offered to mitigate pulling force. We were particularly interested in prong collars as their inherently aversive design has made their use a subject of debate. Though banned in certain countries and widely available in others, to date, there is no research comparing them to other leash walking equipment. Methods We compared four types of leash walking equipment: a martingale (flat collar as baseline measure), a front-connection harness, a polymer prong-style collar (Starmark), and a standard metal prong collar. Twenty-three dogs were walked on all four types of equipment for 5-min each. Equipment was attached to a leash which was connected to a battery-powered strain gauge to measure the dog’s pulling force. All walks were video recorded for behavior analysis. Results There were statistically significant differences among the leash equipment types in pulling impulse (Newtons × seconds), (χ ² (2) = 30.6, p < 0.001). Post-hoc analysis revealed significant differences in impulse between the martingale and the other equipment: harness (Z = −3.69, p < 0.001), Starmark collar (Z = −3.62, p < 0.001) and prong collar (Z = −3.92, p < 0.001). No other differences among equipment types were significant. Fifteen behaviors were examined as welfare indicators but only three: looking at the handler, lip licking, and sniffing occurred across all dogs and all walks. There was a statistically significant difference in frequency of lip licking behavior across the four types of leash-equipment (χ ² (2) = 8.17, p = 0.04) and post-hoc analysis showed a difference between the martingale and the harness (Z = −2.65, p = 0.008). While our research did not provide any clear evidence of poorer welfare due to equipment type, we caution the generalizability of these findings and recommend further assessment of these items of leash-walking equipment in real-life scenarios.
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Dog harnesses are a popular walking aid for pet dogs. Research has focused on the biomechanical impact of assistance dog harnesses; however, this is lacking in the pet dog harness industry. This study aimed to explore the impact of six different harness types on canine biomechanics compared to a standard (base) collar, specifically analysing shoulder extension, shoulder flexion, elbow extension and elbow flexion. A high-speed recording device recorded a total of 21 videos per dog (n=30), and analysis demonstrated that the straight-front harness allowed for the most elbow and shoulder extension and flexion, whereas the front clip allowed for the least elbow and shoulder flexion and extension. By directly comparing the six harnesses, three of which are new to research inclusion, the evidence drawn demonstrates which harnesses should be utilised more and which should potentially be avoided. These results provide a foundation for future research, and recommendations have been outlined, specifically considering breed difference, morphological impacts and long-term effects of harness design on canine gait. With advancements in the canine industry, this research is crucial for maximising safety and potentially preventing or delaying various musculoskeletal disorders.
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The close bond that can exist between humans and their dogs is an important aspect of the evolutionary, economic, and social connections between the two species. There is a need for a better understanding of the place of the dog within the human–dog bond and on ways the human–dog bond affects dog welfare. We conducted a scoping review to investigate to what extent and in what ways dog welfare is addressed in the research literature on the human–dog bond. We identified 706 publications on the human–dog bond from across the globe that were published from 2012 to 2023. We found that 246 of these 706 publications had a focus on dog welfare. Our review showed that the interplay of characteristics and backgrounds of owners/handlers and their dogs was linked to dog welfare in multiple, both positive and negative, ways. Our review is limited by the fact that most of the research that we reviewed involved pet dogs and in majority came from Western, Educated, Industrialized, Rich, Democratic (WEIRD) societies. There is a need for a better understanding of how the human–dog bond affects the welfare of working, assistance, and service dogs.
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Simple Summary Problem behaviours are a leading cause of relinquishment and euthanasia of young dogs. Previous research has identified associations between owner-reported problem behaviours and risk factors, including how dogs were acquired as puppies, early socialisation experiences, and owners’ experience levels. Puppies acquired during the UK COVID-19 pandemic (“Pandemic Puppies”) were exposed to many of these risk factors; however, consequences for their adult behaviours are, as yet, unexplored. This study aimed to explore the impact of these early-life risk factors, in addition to owner management strategies (including training methods), upon owner-reported problem behaviours in a UK cohort of n = 985 Pandemic Puppies aged 21 months. Overall, 96.7% of owners reported their dog exhibited at least one problem behaviour by this age, and almost one third had displayed separation-related behaviours. Owners reporting more problem behaviours were more likely to use aversive training techniques (e.g., physical punishment), the use of which was high in this population (82.3%). Almost one third of owners had underestimated how hard training their dog would be; this view was more likely among first-time owners. Urgent efforts are required to support this vulnerable population of dogs, including providing owner education regarding humane training techniques, to improve their emotional health and avoid future relinquishment and/or behavioural euthanasia. Abstract Problem behaviours are a leading cause of relinquishment and euthanasia of young dogs. Previous research has identified associations between owner-reported problem behaviours and risk factors, including how dogs were acquired as puppies, early socialisation experiences, and owners’ experience levels. Puppies acquired during the 2020 phase of the UK COVID-19 pandemic (“Pandemic Puppies”) were more likely to be exposed to many of these risk factors compared to puppies acquired in 2019; however, consequences for their adult behaviour are, as yet, unexplored. This study aimed to investigate the impact of these early-life and provenance-based risk factors, in addition to owner management strategies (including training methods) into early adulthood, upon adult dog behaviour aged 21 months. An online longitudinal cohort study of n = 985 Pandemic Puppies was conducted, recruited from a cohort of n = 4369 puppies originally surveyed in November–December 2020, which included data on how and why they were acquired and their socialisation/habituation experiences <16 weeks of age. Nearly all owners (96.7%) reported that their dog had exhibited at least one problem behaviour up to 21 months of age (median: 5; IQR: 3–7). Almost one third of dogs (30.9%) were reported to have displayed separation-related behaviours. Multivariable linear regression modelling revealed that owners reporting more problem behaviours were more likely to use multiple aversive training techniques (e.g., physical punishment), the use of which was notably high in this population (82.3%) compared to previous studies. Attendance at online puppy classes was the sole protective factor against owner use of aversive training methods. Almost one third of owners had underestimated how hard training their dog would be; this view was more likely among first-time owners. Urgent efforts are required to support this vulnerable population of dogs, including providing owner education regarding humane training techniques, to improve canine emotional health and avoid future relinquishment and/or behavioural euthanasia.
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Dog harnesses are a popular walking aid used on pet dogs. Research has focused on thebiomechanical impact of assistance dog harnesses, however, is lacking in the pet dogharness industry. This study aimed to explore the impact of six different harness types oncanine biomechanics compared to a standard (base) collar, specifically shoulder extension,shoulder flexion, elbow extension and elbow flexion. A high-speed recording device recordeda total of twenty-one videos per dog (n=30), and analysis demonstrated that the straight-front harness allowed for the most elbow and shoulder extension and flexion, whereas thefront-clip allowed for the least, therefore causing the largest reduction of biomechanics. Bydirectly comparing the six harnesses, three of which are new to research inclusion, theevidence drawn demonstrates which harnesses should be utilised more, and which shouldpotentially be avoided. These results provide the starting point for future study, andrecommendations have been outlined, specifically considering breed difference,morphological impacts, and long-term effects of harness design on canine gait. Withadvancements in the canine industry, this research is indispensable to maximise safety andpotentially prevent or delay various musculoskeletal disorders. Keywords: Biomechanics, Flexion and extension, Gait, Harnesses, Quintic, Restrictive vs.non-restrictive harnesses.
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Leash pulling is a concern for dog owners and can be detrimental to the health and welfare of dogs. Neck-collars and back-connection harnesses are popular restraint types. Harnesses have been proposed as a better and more considerate option for canine health and welfare. Anecdotally, dogs pull more when wearing a back-connection harness; however, there is no scientific evidence for this perception. This study aimed to investigate how strongly dogs pull on the lead to achieve a food treat or toy under restraint by a neck-collar versus a back-connection harness. A within-subject counterbalanced design was used for the study, involving 52 shelter dogs. A customised canine leash tension metre was connected to the collar or harness to record the pulling of the dogs, including measuring the maximal and mean leash tension, and the time spent pulling. In addition, dog behaviours were recorded using two cameras from two separate directions. The maximal and mean leash tension and the pulling time were greater under restraint by harness when attracting dogs with food treats. No significant difference between harness and collar was found in potential stress-related behaviours (e.g. tail and ear positions, lip-licking, and panting). However, dogs looked at the experimenter more often when restrained by harness than collar in the food treat attraction test. No significant difference was detected between harness and collar with respect to leash tension and stress-related behaviours in the toy attraction test. These findings suggest that dogs tend to pull stronger and more steadily when wearing a back-connection harness compared to a neck collar to reach the food treat but not the toy.
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Background: This study investigated the impacts of the first COVID-19 UK lockdown on dog walking and ownership. Methods: An online survey was circulated via social media (May-June 2020). Completed responses (n = 584) were analysed using within- and between-group comparisons, and multivariable linear and logistic regression models were created. Open-ended data were coded into key themes. Results: During lockdown, dogs were walked less frequently, yet for a similar duration per week and closer to home. Dogs whose owners lived alone, or whose owners or household members had heightened vulnerability to COVID-19 were walked less than before, as were high-energy dogs. A minority of owners continued dog walking despite exhibiting symptoms or needing to self-isolate, justifying lack of help, dog behavioural problems, living in less populated areas, and the importance of outdoor exercise for their mental health. Dog ownership had multiple benefits (companionship, purpose and motivation; break from bad; positive to focus on) as well as challenges (changes in dog behaviour, balancing dog needs with public health guidance, accessing pet food/supplies and services, and sharing crowded outdoor spaces with others). Most did not have an emergency care plan for their pet before the pandemic and only a handful developed one. Conclusions: Findings can be used to inform public health and dog welfare strategies for future lockdown situations or other disasters and emergencies likely to impact on daily routines.
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Physical inactivity remains a global epidemic leading to an estimated 5 million preventable deaths per year. Although there exist numerous public-health campaigns aimed at increasing physical activity (PA), a potentially fruitful but underexplored avenue to promote both human and animal health is veterinary-prescribed PA programs. The aim of this study was to determine the feasibility and acceptability of incorporating veterinary-prescribed PA programming into a diverse array of clinic settings. Participants (n = 722 veterinary-clinic staff (VS); n = 1028 dog owners (DOs)) completed an online survey assessing: (a) the perceived importance of PA for promoting health and preventing disease, (b) willingness to participate in a veterinary-prescribed PA program, and (c) potential benefits and barriers of such a program. Both groups of participants indicated that PA is important for both human and animal health (97% and 98% of VS and 92% and 93% of DOs said PA is very or extremely important for animal and human health, respectively). Additionally, most participants in both groups expressed an interest in participating in a veterinary-prescribed PA program in the future, with only 11% of DOs and 10% of VS saying they were not interested. Benefits and barriers of this type of intervention for both practitioners and patients were also identified. Incorporating veterinary-prescribed PA programming into veterinary clinics seems to be acceptable to both DOs and VS. Additionally, many VS believe such programming would be feasible at their clinics; thus, pursuing such programs appears to be a promising avenue for promoting human and animal health.
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Dogs play an important role in our society as companions and work partners, and proper training of these dogs is pivotal. For companion dogs, training helps preventing or managing dog behavioral problems—the most frequently cited reason for relinquishing and euthanasia, and it promotes successful dog-human relationships and thus maximizes benefits humans derive from bonding with dogs. For working dogs, training is crucial for them to successfully accomplish their jobs. Dog training methods range widely from those using predominantly aversive stimuli (aversive methods), to those combining aversive and rewarding stimuli (mixed methods) and those focusing on the use of rewards (reward methods). The use of aversive stimuli in training is highly controversial and several veterinary and animal protection organizations have recommended a ban on pinch collars, e-collars and other techniques that induce fear or pain in dogs, on the grounds that such methods compromise dog welfare. At the same time, training methods based on the use of rewards are claimed to be more humane and equally or more effective than aversive or mixed methods. This important discussion, however, has not always been based in solid scientific evidence. Although there is growing scientific evidence that training with aversive stimuli has a negative impact on dog welfare, the scientific literature on the efficacy and efficiency of the different methodologies is scarce and inconsistent. Hence, the goal of the current study is to investigate the efficacy and efficiency of different dog training methods. To that end, we will apply different dog training methods in a population of working dogs and evaluate the outcome after a period of training. The use of working dogs will allow for a rigorous experimental design and control, with randomization of treatments. Military (n = 10) and police (n = 20) dogs will be pseudo-randomly allocated to two groups. One group will be trained to perform a set of tasks (food refusal, interrupted recall, dumbbell retrieval and placing items in a basket) using reward methods and the other group will be trained for the same tasks using mixed methods. Later, the dogs will perform a standardized test where they will be required to perform the trained behaviors. The reliability of the behaviors and the time taken to learn them will be assessed in order to evaluate the efficacy and efficiency, respectively, of the different training methods. This study will be performed in collaboration with the Portuguese Army and with the Portuguese Public Security Police (PSP) and integrated with their dog training programs.
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On 23 March 2020, the UK Government imposed a nationwide lockdown as part of efforts to mitigate the impact of COVID-19. This study aimed to explore how the experience of dog ownership in the UK was impacted during this lockdown. Data for this research came from open-ended survey questions and an electronic diary completed by members of the general public and participants involved in “Generation Pup”, an ongoing longitudinal cohort study of dogs. A total of 10,510 free-text entries were analysed. Three major themes emerged: spending time at home with dog(s), walking practices, and behaviour and training. Owners valued having more time than usual with their dog(s) but also recognised that spending extra time with their dog(s) may negatively impact on the dog’s future ability to cope when left alone. However, very few owners provided alone time for their dog(s) during the lockdown. The opportunity to walk their dog(s) as part of their permitted daily exercise was regarded positively, but walks under the lockdown guidelines were not always felt to be adequate with respect to providing sufficient exercise and opportunities for interaction with other dogs. Owners reported observing new undesirable behaviours in their dog(s) during the lockdown, including barking and dogs being “clingy” or vocalising when briefly left alone. Based on these findings, we suggest intervention strategies to best support dog welfare that include helping dog owners to teach dogs to cope with being alone, even if owners do not need to leave their dogs alone.
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A high proportion of dogs and cats are fearful during veterinary visits, which in some cases may escalate into aggression. Here, we discuss factors that contribute to negative emotions in a veteri-nary setting and how these can be addressed. We briefly summarise the available evidence for the interventions discussed. The set-up of the waiting area (e.g., spatial dividers; elevated places for cat carriers), tailoring the examination and the treatment to the individual, considerate handling (minimal restraint when possible, avoiding leaning over or cornering animals) and offering high-value food or toys throughout the visit can promote security and, ideally, positive associa-tions. Desensitisation and counterconditioning are highly recommended, both to prevent and ad-dress existing negative emotions. Short-term pain from injections can be minimised by using tactile and cognitive distractions and topical analgesics, which are also indicated for painful procedures such as ear cleanings. Recommendations for handling fearful animals to minimise aggressive re-sponses are discussed. However, anxiolytics or sedation should be used whenever there is a risk of traumatising an animal or for safety reasons. Stress-reducing measures can decrease fear and stress in patients and consequently their owners, thus strengthening the relationship with the cli-ents as well as increasing the professional satisfaction of veterinary staff.
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Problem behaviours may lead to compromised welfare, risk of relinquishment and euthanasia for dogs, as well as distress and safety issues for owners. This study used data provided by 1111 UK and Republic of Ireland participants in the ‘Generation Pup’ longitudinal study of canine health and behaviour. The aims were to; i) identify the proportion and type of problem behaviours reported by owners when their dogs were 6 and 9-months; ii) identify risk factors for behaviours owners reported as a ‘problem’ when their dog was 9-months old; iii) identify risk factors for behaviours reported to occur but not recorded as a ‘problem’ by owners when dogs were 9-months old; and iv) identify whether and how owners sought help for undesired behaviours. In the 6 and 9-months questionnaires, 31 % and 35 % (respectively) of owners reported their dog to be showing behaviour(s) that they found a problem. Owners most often sought help for these behaviours from dog trainers (72 % at 6-months and 68 % at 9-months), and online sources excluding those associated with welfare organisations (which were listed separately) (34 % at 6-months and 27 % at 9-months). The most commonly reported problem behaviours at both ages were pulling on the lead, jumping up at people and poor recall. Multivariable logistic regression analysis showed that female owners, owners who were unemployed/homemakers/pensioners/retired, owners who did not attend (nor planned to attend) puppy classes, and owners who reported they used a mixture of positive reinforcement and positive punishment or positive punishment only training methods at 9-months had increased odds of reporting a problem behaviour in their dogs at that age. Further investigation determined risk factors for owners reporting one or more of the three most commonly reported problem behaviours (pulling on the lead, jumping up at people and poor recall) in their dog’s 9-months questionnaire compared with those owners who separately recorded the occurrence of these behaviours, but did not report any to be problematic. Owners who were employed/self-employed/students, owners who reported that they used positive reinforcement only, owners that had not attended puppy class, and owners of small dogs had increased odds of not reporting a behaviour to be problematic despite evidence of the behaviour having been observed by the owner. These results indicate that not all potentially concerning canine behaviours were perceived by the owners to be problematic, and has identified groups of owners more likely to require support with behaviour issues in their dogs.
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Leash tension forces exerted by dog and handler during walks affect their welfare. We developed a novel ambulatory measurement device using a load cell and a tri-axial accelerometer to record both the tension and direction of forces exerted on the leashes. Data were relayed telemetrically to a laptop for real time viewing and recording. Larger and heavier dogs exerted higher leash tension but had a lower pulling frequency than their smaller and lighter conspecifics. This pattern was observed in the reactional forces of handlers. Young dogs pulled more frequently during walks, which was also mirrored in handlers’ pulling. Well-behaved dogs created lower leash tension, but handlers did not respond with lower forces. This novel method of recording leash tension will facilitate real-time monitoring of the behaviour of dogs and their handlers during walks.