Mama's Last Hug is a fascinating exploration of the rich emotional lives of animals, beginning with Mama, a chimpanzee matriarch who formed a deep bond with biologist Jan van Hooff. Her story and others like it - from dogs 'adopting' the injuries of their companions, to rats helping fellow rats in distress, to elephants revisiting the bones of their loved ones - show that humans are not the only species with the capacity for love, hate, fear, shame, guilt, joy, disgust, and empathy. Frans de Wa ...