Siamangフクロテナガザル

Species Data

Classification

Primates / Hylobatidae Source

Distribution

Found on Sumatra Island and the Malay Peninsula, inhabiting forests from lowland areas up to elevations of 3,800 meters. Source

Did You Know?

• The siamang is the largest of all gibbon species, weighing roughly twice as much as other gibbons. Source
• Both sexes have a large throat pouch that can inflate to nearly the size of their own head, allowing them to produce loud, far-carrying calls. Source
• Siamangs are typically monogamous, and mated pairs strengthen their bond through loud, well-patterned duet calls. Uniquely among gibbons, two toes on each foot are partially joined by a membrane. Source

FAQ

How is the siamang different from other gibbons?

It is the largest gibbon species, weighing roughly twice as much as other gibbons, and is the only one with a large inflatable throat pouch used for loud calls and two partially webbed toes on each foot. Source

Why do siamang pairs call together?

Mated pairs, which are typically monogamous, perform loud, coordinated "duet" calls using their inflatable throat pouches to reinforce their pair bond and defend their territory. Source

Is the siamang endangered?

Yes, the IUCN classifies it as Endangered, with habitat loss from palm oil plantations and the illegal pet trade—which targets infants—as the primary threats. Source