F. B. M. de Waal

"Mama?s Last Hug begins with the death of Mama, a chimpanzee matriarch who formed a deep bond with biologist Jan van Hooff. When Mama was dying, van Hooff took the unusual step of visiting her in her night cage for a last hug. Their goodbyes were filmed and went viral. Millions of people were deeply moved by the way Mama embraced the professor, welcoming him with a big smile while reassuring him by patting his neck, in a gesture often considered typically...

"People often assume a cognitive ladder, from lower to higher forms, with our own intelligence at the top. But what if it is more like a bush, with cognition taking different forms that are often incomparable to ours? Would you presume yourself dumber than a squirrel because you're less adept at recalling the locations of hundreds of buried acorns? Or would you judge your perception of your surroundings as more sophisticated than that of a echolocating...