These rump pads help the monkeys sit for long periods of time. Some New World monkeys from South America, such as the spider monkey, have prehensile tails that are used as a fifth hand for climbing or grasping. Others, like the squirrel monkey, lack this specialized adaptation and use their tails for balancing. When comparing Old World and New World monkeys, the easiest way to distinguish the two is the prehensile tail on the New World monkeys. Apes Apes are different from monkeys because apes have no tails, and their arms are longer than their legs.
Gibbons are the smallest of the apes and the most agile.
They are found in the rain forests of southeast Asia, where they coexist with orangutans. Silver Langur Silver langurs can be found in Northern India. They are considered a nuisance among Indian farmers due to their habit of raiding crops and stealing food. The langur's wild diet is mainly leaves. Langurs must sit quietly to allow digestion to take place.