By Shanna Hanbury Bonobos, one of humanity’s closest relatives, can tell when a human doesn’t know something and steps in to ...

World Bonobo Day highlights the urgent need to protect bonobos from habitat destruction, poaching, and deforestation.

For their study, published Monday in the journal Proceedings of the National Academy of Sciences, a bonobo would watch someone place a treat beneath one of three cups in proximity to Townrow.