Baboons are some of the largest monkeys in the world and all five species live in Africa or Arabia. The males can grow to over 1 metre long (excluding the length of their tails) and weigh almost 40 kilograms. They are Old World monkeys, however their tails are not prehensile despite the fact that they do climb trees to eat, sleep and look out for trouble. Baboons spend a lot of their time on the floor and have a very varied diet. Their diet mainly consists of fruit, grasses, seeds and bark but they also have a taste for meat and hunt birds, rodents and even the young of larger mammals such as antelopes and sheep.