The past few decades have seen a virtual explosion of scientific research in the area of cognition, emotions, suffering, and mental states in animals. Studies in the field, laboratory, and clinical medical practice have amassed an overwhelming body of evidence demonstrating that mental well-being is of paramount importance in all aspects of animal care. There is no longer any reasonable doubt among researchers that mental health is of equal importance as physical health and animal well-being. Recent research convincingly shows that physical health is strongly influenced by mental states, thereby making it clear that effective health care requires attention to the emotional well-being as well as physical. Yet, for its vast importance, mental health in veterinary medicine has to date not been compiled and structured into an organized field or body of knowledge. This information, so critical to the formal establishment of the field of mental health and well-being in animals, remains scattered throughout a wide array of scientific journals.This book represents the first authoritative reference text bringing together the most up-to-date information in the variety of subjects comprising the field of mental health and well-being in animals. Bringing together a host of distinguished experts internationally noted in the fields of animal emotion research, animal behavior, cognitive science, and neuroscience, the book represents the first authoritative reference compiling the diverse information on the animal mind and combining the revolutionary advances in the cognitive sciences with the knowledge in veterinary medicine and clinical animal behavior. This book takes a descriptive and proscriptive approach to mental health, mixing the scientific research with practical information with clinical applications for veterinary health professionals to use in practice.