This engaging and authoritative portrait of animals’ emotional lives is as groundbreaking as Darwin’s Origin of Species in the facts and insights it presents about the animal kingdom. You’ll meet an Indian elephant known for his facial expressions, a shy gorilla who is proficient in sign language and loves to play house with dolls, and an African grey parrot who, when left at the veterinarian’s, cried, “Come here! I love you. I’m sorry. I want to go back.” Animal lovers know that their dogs, cats, and birds have complex emotional lives, and now scientists have begun to chip away at this traditional scientific taboo.