Müller's Bornean gibbon, grey gibbon (Hylobates muelleri)
Description Hylobates muelleri
English: Mueller's Gibbon at the Cincinnati Zoo and Botanical Garden
Date 29 October 2009
Source Own work
Author Greg Hume (https://commons.wikimedia.org/wiki/User:Greg5030)
Müller's Bornean gibbon (Hylobates muelleri), also known as the grey gibbon, is a primate in the gibbon family, Hylobatidae. Müller's Bornean gibbon is endemic to the island of Borneo, inhabiting the northern and eastern part of the island. In the southwest of the island lives the Bornean white-bearded gibbon; their territories hardly overlap. Grey gibbons are diurnal rain forest dwellers, characterized by the long arms that all gibbons have, with which they brachiate through the trees. They live together in monogamous pairs, and defend their family territory against intruders with long, loud singing. Their diet consists primarily of fruits. Little is known about the reproductive patterns of this species, but it is thought to be similar to that of other gibbon species. Order: Primates, Family: Hylobatidae.