Researchers say that while territorial disputes between animal groups are well known, wars within such groups are extremely ...

Outbreaks of violence between chimpanzees have sparked fierce debate online about the origins of war in humans ...

These chimps used to be friends.

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 ...

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

A chimp community in Kibale National Park has split into rival groups, with one attacking the other as researchers—including ...

Researchers have documented a permanent split between the largest-known group of wild chimpanzees, which erupted into a lethal civil war over the past several years — findings that could help ...

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

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

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

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." ...