Roland Seitre / White-handed Gibbon (Hylobates lar) calling while hanging from branch, native to Asia

Ernie Janes / Lar gibbon (Hylobates lar) captive, occurs in Indonesia, Laos, Malaysia, Myanmar and Thailand. Digitally added leaf pattern.

Sean Crane / White-handed Gibbon (Hylobates lar) calling while hanging in tree, Kaeng Krachan National Park, Thailand

Cyril Ruoso / Lar gibbon (Hylobates lar)using arms to swing through trees, Gunung Leuser NP, Sumatra, Indonesia.

Cyril Ruoso / White-handed gibbon (Hylobates lar) portrait, captive Singapore Zoo. Endangered species, occurs in South East Asia.

Cyril Ruoso / White-handed gibbon (Hylobates lar) captive at Singapore Zoo.

Roland Seitre / Lar gibbon (Hylobates lar) hand held in human hand. Captive, occurs in Indonesia (Sumatra), Lao People's Democratic Republic, Malaysia, Myanmar and Thailand. Endangered species.

Cyril Ruoso / White-handed Gibbon (Hylobates lar) sitting in tree, native to southeast Asia

Cyril Ruoso / White-handed Gibbon (Hylobates lar) sitting in tree, native to southeast Asia

Cyril Ruoso / White-handed Gibbon (Hylobates lar) hanging from tree while feeding on leaves, native to southeast Asia

Thomas Marent / White-handed Gibbon (Hylobates lar) male, native to Vietnam

Thomas Marent / White-handed Gibbon (Hylobates lar) hanging in tree, Gunung Leuser National Park, northern Sumatra, Indonesia