Atlanta-based author and primatologist Frans de Waal has observed animal behavior for 40 years. He's since challenged prevailing scientific notions of animals as stimulus response machines. His new book, Mama's Last Hug: Animal Emotions, details findings on jealousy and reconciliation.
De Waal is also a psychology professor at Emory University and director of the Living Links Center at the Yerkes National Primate Research Center in Atlanta. He stopped by On Second Thought to talk about his book and work with animals.