Uganda: Inside the Chimpanzee 'Civil War' That Has Locked a Ugandan Forest in Conflict

Chimpanzees in western Uganda have turned on each other in an unusual and deadly conflict, after one community split into rival groups that began carrying out repeated attacks. The violence offers a rare insight into how social bonds can fracture, even in close-knit groups.

The clashes, known as the Ngogo conflict, are the focus of a major study published in April in the journal Science, based on three decades of research.

Researchers say the violence grew out of a single chimpanzee community that gradually divided into factions in Kibale National Park, a process that began in the late 1990s and became more pronounced around 2015.