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…
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…