chimpanzees

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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.


AP

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.