“In this highly revised edition of his precedent-setting book, award-winning researcher Marc Bekoff offers a thorough review of what we know about the emotional lives of a dazzling array of nonhumans and why we must use what we know on their behalf. The time is now for a breakthrough; we must stop relying on timeworn, misleading claims that we don’t really know what other animals are feeling and what they want and need from us. In fact, we’ve known for decades that we are failing countless animals by ignoring who they are and what they’re asking of us—namely, to treat them with dignity and compassion.”—Sy Montgomery, award-winning author of The Soul of an Octopus, Of Time and Turtles, and many other books

“One of the greatest mistakes of twentieth-century science was denying nonhumans’ feelings and thoughts. Marc Bekoff has reminded us, with sensitivity and rigor, that nonhumans have not only a mental life, but a rich, emotional mental life—one important to acknowledge but also delightful to behold. The Emotional Lives of Animals should be on the bookshelf of anyone who lives with or around animals—which is everyone.”—Alexandra Horowitz, author of Inside of a Dog and The Year of the Puppy

“The Emotional Lives of Animals was brave when it was first published in 2007 because Bekoff’s views were controversial; and it was essential because of the wealth of information the book brought together. Since then Bekoff’s views have largely carried the day, but this second edition is even more essential than the first because of the way that it documents and makes accessible the explosion of knowledge that has helped to bring about this change.”—Dale Jamieson, director of the Center for Environmental and Animal Protection; affiliated professor of law, medical ethics, and bioethics; and professor emeritus of environmental studies and philosophy; New York University