In tourist hotspots around the world, monkeys steal phones, extort snacks, and rule streets like tiny crime bosses. At first ...

It turns out monkeys know when they get a raw deal – which, in this case, is a cucumber. In a study being published today, scientists report that for the first time a species of nonhuman primate knows ...

Humans aren’t the only ones who hate a bum deal, it turns out. In a recent study, brown capuchin monkeys trained to exchange a granite token for a cucumber treat often refused the swap if they saw ...

Humans and monkeys share more than physical evolutionary heritage -- they share many behavioral traits, too, like the concepts of fairness and... Monkey Business: Fairness Isn't Just A Human Trait ...