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(Hylobates syndactylus)

The siamang belongs to a family of apes called gibbons, and is well-known for its morning songs in the rain forests of the Malaysian peninsula and Sumatra. Male and female pairs sing a duet for about a half-hour to help establish their territory to other siamangs in the area.

Siamangs, who live their entire lives in the treetops, mate with one partner for life. They mostly feed on fruits, flowers, and young leaves. Siamangs face threats from logging and agricultural practices that shrink the forest, and from poachers seeking them out for the pet trade.

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