From world-renowned biologist and primatologist Frans de Waal, a groundbreaking work which challenges everything we think we know about animal intelligence.

A groundbreaking, approachable book on the role of emotions in animal and human societies, from the world-renowned primatologist and author of Are We Smart Enough to Know How Smart Animals Are?

'A profoundly illuminating book on humans by a great primatologist' John Gray, author of Straw Dogs