Siamang
Siamangs are hylobates – dwellers of trees. They live high (30m) in the rainforests of Sumatra & Malaysia.
Their extra long arms help them swing between branches & are used for balance as they walk along branches with their arms outstretched. They travel up to 1.5km a day. Siamangs are the loudest of all gibbons. They have an inflatable throat sac which amplifies their booming. They make noise to claim territory & can be heard up to 3.5km away.