Chimpanzees from the Western group attacking members of the Central group in 2019. Aaron Sandel Since 1995, scientists have kept a watchful eye on the Ngogo chimpanzees in Uganda’s Kibale National ...

In the mid-1970s, more than a decade into her research on chimpanzees in Tanzania's Gombe National Park, the late and legendary primatologist Jane Goodall witnessed something that horrified her. The ...

For years, two sets of chimpanzees lived as one in Uganda’s Kibale National Park — grooming, interacting and patrolling their territory in a cohesive community. Then suddenly, one set charged the ...

A violent territorial conflict has broken out between two rival chimpanzee groups in Kibale National Park in western Uganda. Scientists believe the clash is unlike anything they have seen before.

Washington-based lobbyists are launching a counteroffensive against a piece of proposed legislation known as the Great Ape Protection and Cost Savings Act that would ban researchers that use ...

Instead, the study found the opposite. In larger groups, chimpanzees appeared more willing to restrain themselves, perhaps because outright fighting would be costly and disruptive when many ...