The Ngogo chimpanzees in Uganda have divided themselves into two main factions, and dozens of deaths have been recorded since ...

In the mid-1970s, primatologist Jane Goodall witnessed something that changed her opinion of chimpanzees forever: A four-year ...

A chimpanzee in Kibale National Park, Uganda, bares its teeth before a fight. (Moritz Wolf/imageBROKER/Getty Images) Deep in the rainforests of Uganda, scientists have watched the largest known group ...

A chimpanzee community in Uganda’s Kibale National Park that split into rival factions later attacked former allies in what ...

The conflict is unfolding in Uganda's Kibale National Park, where a once-unified group has split into rival factions that ...

THE world’s biggest chimp clan has exploded into violence as two warring factions kill mothers and children on opposing sides ...

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

The first well-observed "civil war" in wild chimpanzees reveals that shifting social ties can fracture a group, igniting deadly conflict between former friends.

A long-term study of the world's largest known community of chimpanzees has documented a rare event: what the researchers describe as the primate equivalent of a "civil war." ...

Uganda chimp group splits into rival factions, unleashing deadly coordinated attacks that resemble human warfare patterns.

Chimpanzees that had once formed a cohesive community in Uganda split into factions and turned violent, according to a new study. Nearly 30 chimps were killed, including 19 infants.