A recent study on chimpanzees in Taï National Park in Côte d'Ivoire, West Africa, revealed that chimpanzees are losing traditions of male mating gestures. This coincides with declining chimpanzee ...

AMES, Iowa – Iowa State University Anthropology Professor Jill Pruetz long suspected that man-made changes influenced the aggressive behavior researchers have observed among chimpanzees. However, her ...

Move over, fashion week — the hottest accessory of the season is a blade of grass shoved in your ear. Or, for the truly daring: your butt. Chimpanzees at a Zambian wildlife sanctuary are going viral — ...

AMES, Iowa – Shocking is one word Jill Pruetz uses to describe the behavior she witnessed after a chimp was killed at her research site in Fongoli, Senegal. The fact that chimps would kill a member of ...

If she were a chimp, Mrs. Robinson still would have brought Benjamin Braddock to his knees, researchers say. A team of researchers led by Boston University anthropology professor Martin Muller is ...

Chimpanzees living in a sanctuary in Africa have developed a “fashion trend” for dangling blades of grass or sticks from their ear holes and their behinds, a new study shows. In 2010, researchers ...

Captive chimpanzees have started dangling grass out of their ears and butts in an unusual fad-like "trend," a new study finds. The chimps (Pan troglodytes) insert a blade of grass or stick into their ...

While watching a group of captive chimpanzees for her graduate research, Ena Onishi noticed something odd about the primates. "They seemed to have a tendency to urinate around the same time," said ...

Scientists suspect that contagious urination, a behavior they observed among a troop of apes in Japan, may play an important role in primate social life. By Annie Roth Ena Onishi, a doctoral student ...

Chimpanzees are running around with grass in their ears and butts at the Chimfunshi Wildlife Orphanage in Zambia. This is the second time a bizarre fad-like behavior has gripped the sanctuary's chimps ...