Symphalangus Syndactylus

Siamangs live in small families composed of a mated pair and their young. Two babies have been born here at the El Paso Zoo since 2007.

Siamangs are territorial and defend their territory with daily calls or bark-like vocalizations.  When they vocalize they prodice different sounds using their throat sac.  After their morning ceremonial vocalization they begin walking and climbing around their exhibit.

Fun Facts


Class: Mammalia

Order: Primates

Family: Hylobatidae

Genus: Symphalangus

Species: S. Syndactylus


Siamangs live in the mountains of the Malay Peninsula and Sumatra in rainforests and monsoon forests. They have relatively small ranges, about 60 acres (0.24 square kilometers). They seem to travel about half as much daily, which may be because they consume a greater percentage of a more common food, leaves.