Chimpanzees and bonobos maintain tight inner circles of preferred grooming partners inside their wider social networks, ...

Great apes appear to build friendships much like humans do. By studying grooming behavior, researchers discovered that ...

Primates, including humans, are among the social animals living on Earth. Their survival relies heavily on cooperation with ...

Chimpanzees may look like smaller, hairier versions of humans, but when a full-grown chimp decides to throw its weight around, the difference is stark. Their strength is not just a gym-rat talking ...

Add Yahoo as a preferred source to see more of our stories on Google. A Congolese Army soldier holds a baby chimpanzee while manning a checkpoint in the entrance to the provincial capital of Goma, ...