Siamang

The siamang is an 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 in height, and weighing up to 14 kg. It is the only species in the genus Symphalangus. Siamangs have a grayish or pinkish throat sac, which they inflate during vocalizations. The throat sac can become as large as a grapefruit. When moving slowly, they swing like a pendulum as they grab one branch and release before grabbing the next, so that the body is freely projected through the air. Siamangs have a grayish or pinkish throat sac, which they inflate during vocalizations. The throat sac can become as large as a grapefruit. When moving slowly, they swing like a pendulum as they grab one branch and release before grabbing the next, so that the body is freely projected through the air.

Conservation status: Endangered (Population decreasing)

Scientific name: Symphalangus syndactylus

Mass: 25 lbs (Female), 24 lbs (Male)

Trophic level: Omnivorous

Gestation period: 231 days

Length: 1.9 ft. (Male), 1.9 ft. (Female)

Family: Hylobatidae