Animal Madness: How Anxious Dogs, Compulsive Parrots, and Elephants in Recovery Help Us Understand Ourselves

The Soul of All Living Creatures: What Animals Can Teach Us About Being Human

The Emotional Lives of Animals: A Leading Scientist Explores Animal Joy, Sorrow, and Empathy — and Why They Matter

Animal Wise: How We Know Animals Think and Feel

What If?: Serious Scientific Answers to Absurd Hypothetical Questions

Why Dogs Hump and Bees Get Depressed: The Fascinating Science of Animal Intelligence, Emotions, Friendship, and Conservation