
View Photo Gallery — The hidden language of dog play: A new book studies dog play and what it can reveal about dogs’ emotional lives and the
“Dogs have an amazing relationship with us, and Marc [Bekoff] has done a beautiful job helping us understand them,” says Brian Hare, a biological anthropologist at Duke University and one of the world’s foremost experts on canine cognition. “Play gives us a peek inside their heads and helps us understand how they became the species they are today.”