Fig 1 - uploaded by Paul Moler
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Great Plains toad, Bufo cognatus
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Frogs and toads are amphibians with four legs and no tail. At least 85 species of frogs are native to the United States, and there are three well-established exotic species. Frogs occur in almost all nonmarine habitats. Most frogs have a two-phased life cycle, including an aquatic larval form (tadpole) and a terrestrial or semiaquatic adult form. A...
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Many frogs undergo direct development, in which the embryo develops within the egg and lacks a tadpole stage, being hatched morphologically similar to the adults. Such reproductive behaviour ensures the evolutionary success of their lineages without the limitation of needing a moist substrate for egg deposition. The species in the genus Raorchestes...
