You are never too old to play — a maxim that even adult chimpanzees seem to follow. Young chimpanzees are already known to get many benefits from playing. But it seems to also be more important ...

This is the adorable moment a child plays peek-a-boo with a baby chimpanzee at Beijing Zoo in China on November 26.

An orphaned baby chimpanzee whose plight moved people around ... While in the cage, Nemley also suffered during rough play with a slightly older male, and was injured during what might have ...