Do all animals have rights? Is it morally wrong to use mice or dogs in medical research, or rabbits and cows as food? How ought we resolve conflicts between the interests of humans and those of other animals? Philosophical inquiry is essential in addressing such questions; the answers given must have enormous practical importance. Here for the first time in the same volume, the animal rights debate is argued deeply and fully by the two most articulate and influential philosophers representing the opposing camps. Each makes his case in turn to the opposing case. The arguments meet head on: Are we humans morally justified in using animals as we do? A vexed and enduring controversy here receives its deepest and most eloquent exposition.

"A fascinating treatise . . . [that] appeals primarily to students and animal rights proponents." - Publishers Weekly

"The volume should be in the library of any school where philosophy is taught or animal research conducted, that is, in nearly every academic library." - CHOICE

"The book would make an ideal main text in a seminar on animals, ethics, and science for advanced undergraduate or graduate students in philosophy, biological sciences, experimental psychology, or the health-professions, including veterinary sciences." - Journal of the American Psychoanalytic Association

"The book is enormously entertaining, and both writers succeed in making it clear and simple." - Radical Philosophy

"The two [Cohen and Regan] argue vigorously and write clearly, producing an engaging, accessible book." - Ethics: An International Journal of Social, Political, and Legal Philosophy