But the case was considered an anomaly, although there is genetic evidence suggesting this kind of split is a rare event occurring every 500 years or so. Now researchers have observed the largest known community of Ngogo chimpanzees in Uganda also permanently splitting into two rival groups with a similar outbreak of violence,

Using over 30 years of observations, scientists have described for the first time how this "exceedingly rare" split arose.

Rare chimpanzee “civil war” reveals how social bonds collapse into violence, offering new insight into human conflict origins.

Learn how the world’s largest known chimpanzee group split in Kibale National Park, Uganda, and why the divide led to deadly violence between former allies in a rare chimpanzee “civil war.”

The largest group of wild chimpanzees known to scientists has permanently split in two. In a study published in Science, researchers from the University of Texas at Austin and other institutions report the first clearly documented permanent fission in wild chimpanzees and the sustained intergroup violence that followed.

Chimpanzees in Uganda use plants to treat wounds and help injured companions, revealing potential roots of human medicine.

The largest group of wild chimpanzees known to scientists has permanently split in two. In a study published in Science, researchers from The

Chimpanzees appear to execute Rational Evidence-Weighing in complex decision-making tasks. The experiments conducted demonstrated that chimps changed their minds when presented with stronger evidence. Belief Revision occurs independently of language, which ...