New study describes what may be the first case of a unified community of chimps turning on itself ...

Aaron Sandel can pinpoint when it all started. The codirector of the Ngogo Chimpanzee Project had been observing a group of ...

The once close-knit community of Ngogo chimpanzees have been at loggerheads for the last eight years.

An unusually large troop of chimpanzees displayed cooperation and social cohesion for decades, until something shifted and ...

These animals used to be friends, but now they attack each other on sight.

I’ve been “surrounded” by apes and monkeys for several weeks now as I read up on primate behavior as part of a UP course ...

For decades, the 200 Ngogo chimpanzees in Kibale National Park, Uganda, lived what seemed a calm and normal existence. Males and females hunted together, groomed each other and went on patrols through ...