Advances in the Study of Behavior, Volume 50 provides users with the latest insights in this ever-evolving field. Users will find new information on a variety of species, including social behaviors in reptiles, the behavioral evidence of felt emotions, a section on developmental plasticity, a chapter on covetable corpses and plastic beetles and the socioecological behavior of burying beetles, and a section on the mechanisms of communication and cognition in chickadees. This volume makes another important contribution to the development of the field by presenting theoretical ideas and research findings to professionals studying animal behavior and related fields.