Male (black) and female (yellow) at the Cincinnati Zoo.

Buff-cheeked or yellow-cheeked gibbons (Hylobales gabriellae) get their name from the large amount of fur located on the side of their faces. Gibbons are known for a specialized form of swinging locomotion called brachiation. Bending its slender fingers, the hand forms a hook at the end of its long arm. Hooking onto a branch, the gibbon then swings itself forward to the next branch.


  • Pronunciation: GIB-un
  • Where to see them: Southeast Asia
  • Height: 1.5 to 2 ft
  • Weight: Up to 12.5 lbs
  • Lifespan: Up to 50 years in captivity
  • Habitat: Tropical forest
  • Diet: Fruit, leaves, and invertebrates
  • Risk Status: Species at Risk (IUCN—Vulnerable)
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