Immensely influential and powerful, Animal Liberation is also highly unusual. A comprehensive analysis of conditions in factory farms and animal laboratories, it compellingly argues that we should stop eating meat. A work of philosophy, it includes recipes for vegetarian food. In this revised edition, Peter Singer discusses the evolution of the animal rights movement and the extent to which his own views have changed since first publication in 1975. He also graphically updates his account of what is being done to animals in the name of scientific, military and commercial research.