Abstract
Although comprising a paraphyletic assemblage, tuatara, turtles, snakes, lizards, and crocodylians are colloquially grouped as reptiles. These groups all have at least some auditory capabilities but generally do not have very complex vocalizations. Most commonly, the sounds produced by reptiles are associated with defensive or aggressive behavior. Crocodylians and some lizards are the exception, using vocal communication to mediate group cohesion, parental care, courtship, and territoriality. Because of the diversity of acoustic signals and the variety of habitats in which these animals live, coupled with the relatively limited body of literature on reptile bioacoustics, reptiles represent a compelling subject for future studies on the evolution of vocalization.
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