蜜芽传媒

Primatologists have documented previously unknown social interactions between gorillas and chimpanzees in the Republic of Congo's Nouabal茅-Ndoki National Park.

The study took place over two decades and was led by Dr David Morgan. He told Newsday: 鈥淭heir social interactions were quite deep鈥�from play to aggression鈥�the interactions also involved associations between individuals and their relationships spanned years.鈥�

(Picture: Chimpanzees relax in a tree in the Goualougo Triangle, Nouabal茅-Ndoki National Park. Credit: Nichole Sobecki for The Washington Post via Getty Images.)