Unlike most monkeys, few baboons live in tropical forests; most are found in savanna and semiarid regions, where they rove on the ground. They regularly climb trees, however, and here they sleep, keep watch, and sometimes feed. Baboons eat a variety of plants and animals, including grass and grass seeds, fruit, pods, roots, and tubers that they dig out of the ground. They also eat rodents, birds, and even gazelle fawns that they find hiding in long grass. In South Africa they are said to kill lambs, and everywhere they are known as crop raiders.