Fifty-four-year-old Pierre was completely blind before undergoing a cataract surgery that restored his sight. With this ...

Camera traps in Senegal caught chimpanzee tool use passing from mother to daughter, and a juvenile helping an infant crack ...

Save the Chimps is an organization unlike any other. The world's largest privately funded chimpanzee sanctuary, it's home to over 200 rescued chimps on 150 acres (including five dedicated islands!) ...

Chimpanzees appear to execute Rational Evidence-Weighing in complex decision-making tasks. The experiments conducted demonstrated that chimps changed their minds when presented with stronger evidence.

Add Yahoo as a preferred source to see more of our stories on Google. © GUDKOV ANDREY/Shutterstock.com The post From 2 Million to 170,000: Chimpanzees Are Running ...

Chimpanzees drum with regular rhythm when they beat on tree trunks, a new study shows. Chimpanzees and humans last shared a common ancestor around 6 million years ago. Scientists suspect this ancient ...

Chimpanzees infected with hepatitis C virus in experiments decades ago at last received treatment using drugs made for humans based on the tests, researchers said.