An analysis reveals how the two primate species use sex to resolve conflicts. This suggests that the social function of sex ...

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.

It is known as "the theory of mind" and now, researchers are looking at bonobos to see if they can adjust their actions based on what they think another knows. To judge this, the team set up a ...