Fifteen years ago in a sanctuary in Zambia, inspiration struck a chimpanzee named Julie. She plucked a stiff blade of grass, stuck it inside her ear, and left it there. There the grass dangled as Julie played, groomed, and rested. The behavior soon spread to most of the other chimpanzees in Julie’s group, called Group 4, and was adopted by …
Read More »Innovation Strikes In The Field Of Chimpanzee Rectum Adornment
