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Project Noah Nature School
Symphalangus syndactylus
The Siamang is the largest of the gibbons & the lesser apes. It has thick black fur except on the face. Its arms are particularly long (up to 2.5x body length) but slender. It has opposable thumbs & its big toe is noticeably separated from the rest of the foot. It uses a throat sac to amplify vocalizations. Spotted in captivity.
Tropical hill forest of Malaysia and Sumatra is preferred. They will also live in lowland and swamp (freshwater) forests.
Spotted on May 28, 2009
Submitted on Aug 21, 2011
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