Chimpanzees in Uganda locked in vicious 'civil war', say researchers – BBC

Chimpanzees in Uganda locked in vicious ‘civil war’, say researchers  BBCThese Chimps Began the Bloodiest ‘War’ on Record. No One Knows Why.  The New York TimesChimpanzee empire falls apart in rare instance of division and deadly violence  Phys.orgOnce the world’s largest chimpanzee community, two groups now wage a brutal war  Australian Broadcasting CorporationTwo hundred chimpanzees are embroiled in a ‘civil war’  Scientific American