J. Sean Doody is an assistant professor in the Department of Integrative Biology at the University of South Florida. He is the coauthor of The Australian Pig-Nose Turtle. Vladimir Dinets is a research assistant professor in the Department of Psychology at the University of Tennessee, Knoxville, and a visiting researcher at the Okinawa Institute of Science and Technology. He is the author of Dragon Songs: Love and Adventure among Crocodiles, Alligators, and Other Dinosaur Relations. Gordon M. Burghardt is an Alumni Distinguished Service Professor in the Departments of Psychology and Ecology and Evolutionary Biology at the University of Tennessee. He is the author of The Genesis of Animal Play: Testing the Limits.