One of the most provocative science books ever published—"a feast of great thinking and writing about the most profound issues there are" (The New York Times

Examines the moral behavior observed in animals and argues that human beings are not the only species to live by the principles of cooperation, kindness, and em

Scientists have long counseled against interpreting animal behavior in terms of human emotions, warning that such anthropomorphizing limits our ability to under

From eye-witness accounts of elephants apparently mourning the death of family members to an experiment that showed that hungry rhesus monkeys would not take fo

Received opinion has it that humans are morally superior to non-human animals; human interests matter more than the like interests of animals and the value of h