Chimps are smart, sassy and funny, especially when dressed up like little people. But did you know that they’re much more like us than we might realize?
For one, they’re cold-blooded killers, carrying out brutal raids on other chimp groups to expand their territory. The attacks are most often done by patrolling packs of male chimps that are "quiet and move with stealth," according to the study’s lead author, John Mitani of the University of Michigan. And it works for them: they get land, extra food and resources, and even better access to females.
Chimps Engage in 'War' for Turf