Occasionally, a book is published that challenges many deeply-held convictions about the nature and extent of morality, and about what kinds of beings are capable of exhibiting moral behavior. This book is one such example. Marc Bekoff, an ethologist, who has published many books including The Emotional Lives of Animals, and Jessica Pierce, a philosopher and teacher, and author of the book, Morality Play: Case Studies in Ethics, have constructed in Wild Justice a fairly convincing case that nonhuman animals do indeed exhibit what we humans would call moral intelligence or moral behavior. Readers should keep in mind that Bekoff and Pierce are not saying that moral behaviors in humans and in animals are comparable in every sense. Indeed, the authors make it clear that they are not trying to do a comparative analysis of human and animal morality. And to the possible charge that their analysis is highly anthropomorphic, they maintain that anthropomorphism is not unscientific. The nonhuman animals in their study (and not all nonhuman animals are included) are those mammals that exhibit strong social behaviors and form social bonds. The book consists of six chapters, in addition to the Preface. In this review, I will discuss each chapter only briefly. Chapter 1, ‘‘Morality in Animal Societies: An Embarrassment of Riches,’’ opens with the story of a female western lowland gorilla, named Binta Jua, who lived at the Brookfield Zoo in Illinois. Binta Jua saved a three-year old boy who had managed to climb to the top of the enclosure separating the gorillas from zoo visitors, and who had fallen into the gorilla side of the enclosure and knocked unconscious. This story helps set the tone, in many ways, for the book’s themes by