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.

Bonobos are quick to help a person who doesn’t know what they know, a sign that they can deduce the mental states of others. The capacity to think about what others are thinking, known as theory of ...

Jane Goodall’s research at Gombe Stream National Park revolutionized our understanding of chimpanzee intelligence. In 1960, she observed a chimp named David Greybeard stripping leaves from twigs to ...

A series of hide-and-seek experiments with a bonobo named Kanzi shows for the first time that apes can mentally keep track of multiple familiar humans at once, even when they are out of sight. Kanzi ...

Kanzi, a bonobo celebrated for his intelligence, died in March this year. A recently published study adds to his long list of cognitive abilities: he was able to track the location of people familiar ...

Bonobos, great apes related to us and chimpanzees that live in the Republic of Congo, communicate with vocal calls including peeps, hoots, yelps, grunts, and whistles. Now, a team of Swiss scientists ...

Despite their peaceful reputation, bonobos act aggressively more often than their chimpanzee cousins, a new study found. By Carl Zimmer In the early 1900s, primatologists noticed a group of apes in ...