2 great chimps !

Since 2006, ten-year-old Yoko (in front) and 11-year-old Johnny have lived in the same social group and formed a strong friendship. Having friends is the most essential component of a happy life for chimpanzees, and Yoko is both kind and politically skilled, which is gaining him many friends and political allies. He’s a bit too young now, but this sweet guy has leadership potential. Photo by Sean Brogan.