Bonobos, along with chimpanzees and orangutans, are humans' closest genetic relatives, and are frequently studied for clues about the nature of human evolution. These Great Apes are, as it turns out, a lot like us, but a recent study reveals something about bonobos that we'd perhaps rather not know. Often referred to as the "hippie" apes (partially because bonobos have a lot of casual sex . . a perfectly acceptable "Hey, how's it going?" in bonobo-speak), bonobos don't quite live up to the moniker, it appears. German researchers announced on Monday that, far from being peaceniks, bonobos also collectively hunt, and eat, monkeys. It's not just the male bonobos, either; in fact, females serve as the leaders in bonobo society, and are equally involved in the hunts.