More than twenty years after its original publication, The Case for Animal Rights is an acknowledged classic of moral philosophy, and its author is recognized as the intellectual leader of the animal rights movement. In a new and fully considered preface, Regan responds to his critics and defends the book's revolutionary position.

More than a contest of wills representing professional and economic interests, the animal rights debate is also an enduring topic in normative ethical theory. This book addresses the key issues in this sometimes acrimonious debate. It defends the inherent value of all individuals who are "subjects of a life".