Add Yahoo as a preferred source to see more of our stories on Google. A chimpanzee female (Pan troglodytes schweinfurthii) sleeps in a nest built in a tree in Uganda's Kibale National Park. The ...

This monkey family is a true unit!

In the quest to understand how and why early humans started walking on two legs, scientists are now looking to chimpanzees living in dry, open savannah-like environments for clues. A new study reveals ...

A mother chimpanzee looks out from the central tree to her breakfast (seeds!) at the end of thin branches. Image by Rhianna C. Drummond-Clarke/Greater Mahale Ecosystem Research and Conservation (GMERC ...

Infant chimpanzees are out of mom’s reach the majority of the time they descend from the trees. Kevin Lee/Ngogo Chimpanzee Project and Arizona State University Adolescents are known for risky behavior ...