Watching unfamiliar dogs interact in parks, it may seem like their movements are spontaneous and carefree. But years of research dissected in a new book shows that coded within the playful biting and tackling, there may be signs of human-like empathy, compassion, fairness, and morality. The video above breaks down some of the most common gestures in dogs’ robust physical language.
Update, Nov. 28, 2016: This video has been removed pending the resolution of a licensing claim.
