1. Introduction: The Ancients and the Moderns 2. The Nature of the Beast: The Search for Animal Rationality 3. Just Beasts: Animal Morality and Human Justice 4. Feeling Beastley: Pain, Pleasure, and the Animal Estate 5. Beauty in the Beast: Cooperation, Altruism, and Philanthropy among Animals 6. Animal Appetites: Vegetarianism and Human Morality 7. Conclusion