Siamang

Symphalangus syndactylus

Conservation Status

Endangered

Mammalia · Primates · Hylobatidae

About

The siamang is an endangered arboreal, black-furred gibbon native to the forests of Indonesia, Malaysia, and Thailand. The largest of the gibbons, the siamang can be twice the size of other gibbons, reaching 1 m (3.3 ft) in height, and weighing up to 14 kg (31 lb). It is the only species in the genus Symphalangus. Fossils of siamangs date back to the Middle Pleistocene.

Fun Fact

Siamangs have an inflatable throat sac that amplifies their booming duet calls to 100+ decibels — audible 3 km through dense forest — making them the loudest of all gibbons.

Quick Facts

Habitat

Tropical rainforests

Diet

Frugivore

Lifespan

25-35 years

Threats

Deforestation
Illegal Wildlife Trade
Illegal Logging
Habitat Fragmentation

External Data Sources

Recent sightings on iNaturalist IUCN Red List profile

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