This book provides a new vision, based on sound science and ethics of compassion, which connects the healing of animals with Earth care and the human rights and health care revolution whose time has come. The well-being of animals, wild and domesticated, and the health of the natural environment are found to be inseparable from the health and well-being, and the ultimate fate of our own kith and kin. Written by a veterinarian with doctoral degrees in medicine and animal behavior, and with a lifetime's experience working in animal health, welfare and environmental protection, including agricultural and food safety and public health, this book confronts and challenges the dominant world-view wherein the art and science of animal and human medicine are practiced. Conventional treatments and attitudes toward animals are examined, and the benefits of integrative and preventive medicine in improving the care and health of companion, farmed and wild animals are reviewed. The vision of One Health is framed from a reconsidered science and a renewed understanding of empathy. This is a book for all who care for animals, starting with pet owners seeking to be more informed, professional animal care-providers, including farmers, veterinarians, and veterinary and animal science students, and people who appreciate and respect wild animals. It offers direction and inspiration toward One Health.