In terms of speed and movement, chimps have the upper hand. The bite force of chimpanzees is 1,300 PSI, while scientists estimate that our jaws can deliver 162 PSI. A chimpanzee would have a ...

The long, curved fingers of the chimpanzee hand and the less mobile and weaker thumbs of some monkeys are also capable of generating humanlike, forceful pad-to-pad precision grips. Gelada baboons ...

“Often this gesture is used to request food or be friendly. Sometimes the response from the other chimpanzee is to shake hands.” Researchers define a gesture’s meaning by the way its recipient ...

On Tuesday, scientists in the United States and Spain said the human hand may be more primitive than that of our closest living cousin, the chimpanzee. In fact, human hands are likely more similar to ...

Chimpanzees in West Africa hold onto trees with their hands while kicking against roots with their feet, emitting powerful sounds that travel long distances, sometimes over a half mile. “ ...

When Lindsay wants to climb on her mother’s back and travel, she puts one hand over Beryl’s eye — a gesture that no other chimpanzee is known to make. It’s their own private sign.