Mammals · Primates · Hylobatidae
Siamang
Symphalangus syndactylus
Endangered
At very high risk of extinction in the wild in the near future.
The siamang is the largest of the gibbons, entirely black-coated and with disproportionately long arms with which it moves by brachiation. It lives in monogamous pairs accompanied by their young, in territories it defends with daily song. Its diet is more leaf-based than that of other gibbons: almost half is foliage, which allows it to occupy forests where fruit is scarce. It is especially vulnerable to fragmentation of the canopy, since it almost never comes down to the ground.
Weight
9 kg – 14 kg
Size
70 cm – 90 cm
Life expectancy
35 years
