Iguanas are large, primeval appearing animals that have always attracted considerable attention and sicentific study. The 30 species of iguanas are today collectively referred to as iguanines, or the subfamily Iguaninae, of the lizard family Iguanidae. This book is the result of a symposium of worldwide scientists on the world's iguanas that was held at a joint meeting of the Society of the Study of Amphibians and Reptiles and The Herpetologist's League. Over 30 recognized experts submitted their studies of these interesting reptiles, and have published what was once unknown and unpublished information. This book was a leader in its time, and still serves as a wonderful reference for scientist and student alike.

Covering diverse species from garter snakes to Komodo dragons, this book delves into the evolutionary origins and fascinating details of the mysterious social lives of reptiles. Reptiles have been too often dismissed as dull animals with tiny brains and simple, "asocial" lives. In reality, reptiles engage in a remarkable diversity of complex social behavior. They can live in families; communicate with one another while still in the egg; and hunt, feed, migrate, court, mate, nest, and hatch in groups. In The Secret Social Lives of Reptiles, J. Sean Doody, Vladimir Dinets, and Gordon M. Burghardt-three of the world's leading experts on reptiles-bring together a wave of new research with a synthesis of classic studies to produce the only authoritative look at the social behaviors of the most provocative animals on the planet. The book covers turtles, lizards, snakes, crocodilians, and the enigmatic tuatara. Enhanced with dozens of images, it takes readers through a myriad of social interactions, tendencies, and intimacies ranging from fierce territorial battles to delicate paternal care and from promiscuous pairings to monogamous partnerships. This unique text * explains why reptiles have been neglected as subjects of social behavior studies; * provides numerous examples across all major reptilian groups that overturn the false paradigm of "solitary" reptiles; * explores the sensory, genetic, physiological, life history, and other factors underlying social behavior in reptiles; * presents the case that evolutionary "experiments" found among reptiles offer unparalleled opportunities for understanding how and why social behavior evolves in animals; and * identifies new and developing areas of research helping to reshape our view of reptiles. Revealing the secrets of reptilian social relationships through original quantitative research, field studies, laboratory experiments, and careful analysis of the literature, The Secret Social Lives of Reptiles elevates these fascinating animals to key players in the science of behavioral ecology.

This extensively revised and expanded new edition offers concepts, principles and applied information that relates to the wellbeing of reptiles. As a manual on health and welfare in a similar vein to volumes addressing the sciences of anatomy, behaviour or psychology, this book thoroughly examines the biology of reptile welfare and is about meeting biological needs. The editors, acknowledged experts in their own right, have once again drawn together an extremely impressive international group of contributors. Positive and negative implications of general husbandry and research programs are discussed. In addition to greatly revised original content are nine new chapters offering readers novel insight into: * sensory systems * social behaviour * brain and cognition * controlled deprivation and enrichment * effects of captivity-imposed noise and light disturbance on welfare * spatial and thermal factors* evidential thresholds for species suitability in captivity * record keeping as an aid to captive care * arbitrary husbandry practices and misconceptions The authors have adopted a user-friendly writing style to accommodate a broad readership. Although primarily aimed at academic professionals, this comprehensive volume is fundamentally a biology book that will also inform all involved in captive reptile husbandry. Among others, zoo personnel, herpetologists, veterinarians, lab animal scientists, and expert readers in animal welfare and behavioural studies will benefit from this updated work.

In The Genesis of Animal Play, Gordon Burghardt examines the origins and evolution of play in humans and animals. He asks what play might mean in our understanding of evolution, the brain, behavioral organization, and psychology. Is play essential to development? Is it the driving force behind human and animal behavior? What is the proper place for the study of play in the cognitive, behavioral, and biological sciences?The engaging nature of play -- who does not enjoy watching a kitten attack a ball of yarn? -- has made it difficult to study. Some scholars have called play undefinable, nonexistent, or a mystery outside the realm of scientific analysis. Using the comparative perspectives of ethology and psychology, The Genesis of Animal Play goes further than other studies in reviewing the evidence of play throughout the animal kingdom, from human babies to animals not usually considered playful. Burghardt finds that although playfulness may have been essential to the origin of much that we consider distinctive in human (and mammalian) behavior, it only develops through a specific set of interactions among developmental, evolutionary, ecological, and physiological processes. Furthermore, play is not always beneficial or adaptive.Part I offers a detailed discussion of play in placental mammals (including children) and develops an integrative framework called surplus resource theory. The most fascinating and most controversial sections of the book, perhaps, are in the seven chapters in part II in which Burghardt presents evidence of playfulness in such unexpected groups of animals as kangaroos, birds, lizards, and "Fish That Leap, Juggle, and Tease." Burghardt concludes by considering the implications of the diversity of play for future research, and suggests that understanding the origin and development of play can shape our view of society and its accomplishments through history.

How well do we really know dogs? People may enjoy thinking about them as "man's best friend," but what actually drives the things they do? What is going on in their fur-covered heads as they look at us with their big, expressive eyes? Raymond Coppinger and Mark Feinstein know something about these questions, and with How Dogs Work, they're ready to share; this is their guide to understanding your dog and its behavior. Approaching dogs as a biological species rather than just as pets, Coppinger and Feinstein accessibly synthesize decades of research and field experiments to explain the evolutionary foundations underlying dog behaviors. They examine the central importance of the shape of dogs: how their physical body (including the genes and the brain) affects behavior, how shape interacts with the environment as animals grow, and how all of this has developed over time. Shape, they tell us, is what makes a champion sled dog or a Border collie that can successfully herd sheep. Other chapters in How Dogs Work explore such mysteries as why dogs play; whether dogs have minds, and if so what kinds of things they might know; why dogs bark; how dogs feed and forage; and the influence of the early relationship between mother and pup. Going far beyond the cozy lap dog, Coppinger and Feinstein are equally fascinated by what we can learn from the adaptations of dogs, wolves, coyotes, jackals, dingoes, and even pumas in the wild, as well as the behavior of working animals like guarding and herding dogs. We cherish dogs as family members and deeply value our lengthy companionship with them. But, isn't it time we knew more about who Fido and Trixie really are? How Dogs Work will provide some keys to unlocking the origins of many of our dogs' most common, most puzzling, and most endearing behaviors.