Siamang Symphalangus syndactylus

The largest species among the gibbon family. Both males and females have a large pouch on their throat, allowing them to give loud, deep cries that make a chorus-like sound when multiple calls combine.

Animal name	Siamang
Scientific name	Symphalangus syndactylus
Order	primates	Family	Hylobatidae

it is on display until 16：30.