A new study sheds light on the role of sexual behavior in apes, which has implications for understanding its evolutionary ...

A new look into the private lives of chimpanzees has found that the primates settle disagreements with close friends by ...

Not all bonobos are the same, but they all have a theory of mind The findings build on previous research showing that chimpanzees in the wild will vocalize to warn group members who are unaware of ...

Bonobos, one of humanity’s closest relatives, can tell when a human doesn’t know something and steps in to help — a cognitive ability never before identified in nonhuman apes, a study found.

We don't just have sex to reproduce—new research suggests that using sex to manage social tension could be a trait that existed in the common ancestor of humans and apes six million years ago.

Though very close in genetic relationship and virtually next-door neighbors, chimpanzees and a less-well-known species called bonobos in Zaire are socially poles apart. Only identified as a ...