Bonobos for years have had the reputation of being the cool hippies of the simian world, with a "make love, not war" ethos, ...

Historically considered a more peaceful species than their chimpanzee cousins, bonobos are actually just as aggressive -- but target their ire most often at males, according to a study published ...

(CNN) — 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, ...

The stereotype of violent chimpanzees and peaceful bonobos may be wrong, according to new research comparing aggression in both apes.

A new study has found that chimpanzees may be far from shy bathroomgoers. A team of researchers spent more than 600 hours studying 20 captive chimpanzees to determine that chimps may experience ...

Chimpanzees appear to be the biggest daredevils when they’re infants. Humans tend to take more chances and put themselves in the most danger in adolescence, so the expectation has been that ...

Chimpanzees have a reputation for being aggressive, while bonobos are often seen as their peaceful counterparts. This ...

The riskiest behavior in humans peaks in adolescence. Researchers from the University of Michigan and James Madison University expected to find risky behavior to peak in adolescence in a study of ...

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 ...

Chimpanzees consistently choose crystals over ordinary rocks, suggesting a curiosity that may echo early humans.