dark-handed gibbon

The dark-handed gibbon (Hylobates agilis) is a species of gibbon found in the tropical forests of Southeast Asia. Gibbons are small apes known for their long arms, which they use for brachiation, or swinging from branch to branch. They are diurnal and live in small, monogamous groups that defend territories. Their diet primarily consists of fruit, supplemented with leaves, insects, and bird eggs.

The dark-handed gibbon, specifically, can be either tan or black and has white facial markings. It inhabits Sumatra and the Malay Peninsula. Like other gibbons, they possess a throat sac used for vocalizations, often in duets that serve as territorial markers. Gibbons are considered among the most endangered primates due to habitat destruction and hunting.12