Doug was the leader of his chimpanzee group. He had quickly gained a reputation from human observers as a fair and tolerant ...

Some male chimpanzees use covert physical gestures to sneakily solicit sex. According to a new study, these mating moves vary between chimpanzee communities, suggesting chimp populations have their ...

An entourage of subordinate chimps is gathered eagerly around Steward, the big alpha-male chimpanzee, at the Yerkes National Primate Research Center outside of Atlanta. They're watching Steward ...

The Tulsa Zoo's animal family is about to get a little bit bigger after the announcement that a 12-year-old chimpanzee is expecting her first child. >> Open the video player above to see some of ...

These communities have strict hierarchies, often led by a dominant alpha male. Female chimpanzees reach reproductive maturity at 13 years and give birth year-round. During their 10–14 day ...

After first being introduced and accepted by lead chimpanzee Alon, the 17-year-old from Sydney Zoo was gradually introduced to the rest of the clan. "She was introduced to Alon, our alpha ...

When a male chimpanzee wants to hit on a female without causing a scene, he sometimes has to get a little creative. "The alpha male, he can mate with whoever he wants, whenever he wants ...