Jennifer L. Essler

Jennifer L. Essler
State University of New York College of Agriculture and Technology at Cobleskill | SUNY Cobleskill

PhD

About

50
Publications
7,245
Reads
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483
Citations
Citations since 2017
18 Research Items
401 Citations
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2017201820192020202120222023020406080
2017201820192020202120222023020406080
Introduction
Currently working on researching effective training, socialization and behavior of working dogs.
Additional affiliations
January 2022 - present
State University of New York College of Agriculture and Technology at Cobleskill
Position
  • Professor (Assistant)
September 2017 - December 2021
University of Pennsylvania
Position
  • PostDoc Position
May 2013 - present
University of Veterinary Medicine, Vienna
Position
  • PhD Student

Publications

Publications (50)
Article
Sensitivity to inequity is thought to be an important mechanism for recognizing undesirable cooperative partners and thus crucial for the evolution of human cooperation [ 1 ]. This link may not be unique to humans, as cooperative non-human primates also react to unequal outcomes [ 2 ], whereas non-cooperative species do not [ 3 ]. Although this hyp...
Article
Full-text available
Learning by watching others can provide valuable information with adaptive consequences, such as identifying the presence of a predator or locating a food source. The extent to which nonhuman animals can gain information by reading the cues of others is often tested by evaluating responses to human gestures, such as a point, and less often evaluate...
Article
Full-text available
Fentanyl is a potent opioid used clinically as a pain medication and anesthetic but has recently seen a sharp rise as an illicit street drug. The potency of fentanyl means mucous membrane exposure to a small amount of the drug can expose first responders, including working canines, to accidental overdose. Naloxone, a fast-acting opioid antagonist a...
Article
Full-text available
Recent literature has demonstrated that dogs have the potential to detect, and communicate the presence of, various human diseases. However, there is a lack of investigation into whether commonplace training differences within the field could influence a dog's behavior during a biomedical detection task. Here we report on the behavior of four dogs...
Article
Full-text available
While the world awaits a widely available COVID-19 vaccine, availability of testing is limited in many regions and can be further compounded by shortages of reagents, prolonged processing time and delayed results. One approach to rapid testing is to leverage the volatile organic compound (VOC) signature of SARS-CoV-2 infection. Detection dogs, a bi...
Article
Full-text available
Research on working dogs is growing rapidly due to increasing global demand. Here we report genome scanning of the risk of puppies being eliminated for behavioral reasons prior to entering the training phase of the US Transportation Security Administration’s (TSA) canine olfactory detection breeding and training program through 2013. Elimination of...
Article
Full-text available
The bacterium Bordetella bronchiseptica is responsible for serious respiratory disease in dogs, most often associated with ‘kennel cough’ (canine infectious tracheobronchitis). It is recommended that dogs are vaccinated against the bacterium every 6–12 months, either by oral or intranasal administration. Any impairment of dogs' olfactory capabiliti...
Article
Objective To determine whether first responders delivering naloxone by either the IM or intranasal (IN) route were at risk of contamination with inert powder simulating canine opioid exposure. Design Prospective, crossover design. Setting Research study (university setting). Animals Ten clinically normal working dogs ranging from 9 to 44 months...
Article
Full-text available
The spotted lanternfly ( Lycorma delicatula ) is an invasive species first detected in 2014. The insect feeds on plants causing severe damage in vineyards such as the occurrence of sooty mold fungus that impairs leaf photosynthesis. Currently, there is extensive research on how to track and ultimately prevent the spread of this species. It lays egg...
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Large-scale studies of individual differences in innovative behavior among nonhuman animals are rare because of logistical difficulties associated with obtaining observational data on a large number of innovative individuals across multiple locations. Here, we take a different approach, using observer ratings to study individual differences in inno...
Article
Ovarian cancer is known as a “silent killer” because of its nonspecific symptoms and generally late diagnosis due to the lack of reliable early detection tools. Medical detection canines have been shown to recognize the odor profile of malignant tumors of many types, including ovarian cancer, and may be utilized to help produce a much-needed early...
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Full-text available
Puppy packs (consisting of only puppies) and mixed-age packs (composed of puppies and adults) were observed to test whether social play can be used for assessing and establishing social relations in wolves, Canis lupus. Differently from previous studies, we looked at play behaviours in detail, allowing us to categorize play interactions as either c...
Article
Full-text available
Recent evidence within the field of comparative psychology has demonstrated that small differences in procedure may lead to significant differences in outcome. Therefore, failing to fully explore the impact of different contexts on a behavior limits our ability to fully understand that behavior. A behavior that has exhibited substantial variation,...
Article
Full-text available
Cooperation is only beneficial if the outcome is equally shared between individuals involved in the cooperative interaction. A mechanism to limit the development of unequal cooperation is inequity aversion, the negative reaction to unequal treatment. While inequity aversion has been studied extensively across many animal species, it remains unclear...
Article
Full-text available
One way to gain insights into personality evolution is by comparing the personality structures of related species. We compared the personality structure of 240 wild white-faced capuchin monkeys to the personality structure of 100 captive brown capuchin monkeys. An ancillary goal was to test the degree to which different personality questionnaires y...
Article
Full-text available
Social play is known as a cooperative interaction between individuals involving multiple mechanisms. However, the extent to which the equality of individuals' play styles affects the interaction has not been studied in many species. Dyadic play between wolf puppies, as well as between puppies and adults, was studied to investigate both self-handica...
Data
Outputs from the Model 2 analysis. Generalized linear mixed effects model with the frequency of self-handicapping behaviors of the puppy-puppy dyads as the response variable. ‘Relation’ of the individual to its dyadic partner (e.g. whether they were ‘subordinate’ or ‘dominant’), ‘sex mix’ of the dyad, and the ‘pack type’ for the dyad (e.g. ‘puppy p...
Data
Outputs from the Model 3 analysis. Generalized linear mixed effects model with the frequency of offensive behaviors of the puppy-puppy dyads as the response variable. ‘Relation’ of the individual to its dyadic partner (e.g. whether they were ‘subordinate’ or ‘dominant’), ‘sex mix’ of the dyad, and the ‘pack type’ for the dyad (e.g. ‘puppy pack’ ver...
Data
Outputs from the Model 4 analysis. Linear model with the win ratios of the dyads from the mixed-age packs as the response variable with ‘sex mix’ of the dyad, ‘play duration’ for the dyad, as well as ‘age mix’ of the dyad (e.g. ‘puppy-puppy’ versus ‘puppy-adult’) as the predictor variables. Statistics are given for each variable when they were last...
Data
Outputs from the Model 5 analysis. Generalized linear mixed effects model with the frequency of self-handicapping behaviors of the dyads in the mixed-age packs as the response variable. ‘Relation’ of the individual to its dyadic partner (e.g. whether they were ‘subordinate’ or ‘dominant’), ‘sex mix’ of the dyad, as well as ‘age mix’ of the dyad (e....
Data
Outputs from the Model 6 analysis. Generalized linear mixed effects model with the frequency of offensive behaviors of the dyads in the mixed-age packs as the response variable. ‘Relation’ of the individual to its dyadic partner (e.g. whether they were ‘subordinate’ or ‘dominant’), ‘sex mix’ of the dyad, as well as ‘age mix’ of the dyad (e.g. ‘pupp...
Data
Dominance & Reversed Submission Behaviors for Kaspar 2012. Actors are on the rows while receivers are on the columns. (DOCX)
Data
Outputs from the Model 1 analysis. Linear mixed effects model with the win ratios of the puppy-puppy dyads as the response variable with ‘pack type’ (e.g. ‘puppy pack’ versus ‘mixed-age pack’), ‘sex mix’ of the dyad, and the ‘play duration’ for the dyad as the predictor variables. Statistics are given for each variable when they were last in the mo...
Data
Dominance & Reversed Submission Behaviors for Puppy Pack 2009. Actors are on the rows while receivers are on the columns. (DOCX)
Data
Dominance & Reversed Submission Behaviors for Puppy Pack 2012. Actors are on the rows while receivers are on the columns. (DOCX)
Data
Dominance & Reversed Submission Behaviors for Geronimo 2012. Actors are on the rows while receivers are on the columns. (DOCX)
Data
Dominance & Reversed Submission Behaviors for Nanuk 2012. Actors are on the rows while receivers are on the columns. (DOCX)
Data
Offensive and Self-Handicapping Behavior Data. (XLSX)
Data
Dominance & Reversed Submission Behaviors for Kaspar 2009. Actors are on the rows while receivers are on the columns. (DOCX)
Article
Full-text available
Inequity aversion has been proposed to act as a limiting factor for cooperation, thus preventing subjects from disadvantageous cooperative interactions. While a recent study revealed that also dogs show some sensitivity to inequity, the underlying mechanisms of this behaviour are still unclear. The aim of the current study was threefold: 1) to repl...
Data
Data set for paw task and tolerance test. (XLSX)
Article
Full-text available
Recent evidence indicates that oxytocin plays an important role in promoting prosocial behaviour amongst humans and other species. We tested whether oxytocin affected cooperation and food-sharing in capuchin monkeys, a highly cooperative New World primate. Subjects received either 2IU oxytocin or an inert adjuvent intranasally prior to each session...
Article
Full-text available
Species comparisons of personality structure (i.e., how many personality dimensions and the characteristics of those dimensions) can facilitate questions about the adaptive function of personality in nonhuman primates. Here we investigate personality structure in the brown capuchin monkey (Sapajus apella), a New World primate species, and compare t...
Data
Full-text available
The insight that animals’ cognitive abilities are linked to their evolutionary history, and hence their ecology, provides the framework for the comparative approach. Despite primates renowned dietary complexity and social cognition, including cooperative abilities, we here demonstrate that cleaner wrasse outperform three primate species, capuchin m...
Article
Full-text available
Self-control is a prerequisite for complex cognitive processes such as cooperation and planning. As such, comparative studies of self-control may help elucidate the evolutionary origin of these capacities. A variety of methods have been developed to test for self-control in non-human primates that include some variation of foregoing an immediate re...
Article
Full-text available
The insight that animals' cognitive abilities are linked to their evolutionary history, and hence their ecology, provides the framework for the comparative approach. Despite primates renowned dietary complexity and social cognition, including cooperative abilities, we here demonstrate that cleaner wrasse outperform three primate species, capuchin m...

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