The Sumatran lar gibbon (Hylobates lar vestitus), also known as the Sumatran white-handed gibbon, is a subspecies of the lar gibbon, a primate in the gibbon family Hylobatidae. It is native to the island of Sumatra, Indonesia. It shares the tree tops with orangutans, which, like the gibbon, rarely come out of the trees due to predators, such as tigers and possibly sun bears.
References
External links ARKive - images and movies of the white-handed gibbon (Hylobates lar) Gibbon Conservation Center Thomas Geissmann's Gibbon Research Lab and Gibbon Network