Chimpanzee friends fight together to battle rivals

Chimpanzees join their close bond partners – related group members and friends – to battle rivals. Credit: Liran Samuni, Taï Chimpanzee Project Chimpanzees, one of the closest relatives of humans, cooperate on a group level—in combative disputes, they even cooperate with group members to whom they are not related. Those involved in fights with neighboring […]