Female adults at the Cincinnati Zoo

Description
English: Two adult female Nomascus gabriellae at the Cincinnati Zoo
Date 15 September 2013, 11:29:40
Author Greg Hume https://commons.wikimedia.org/wiki/User:Greg5030
Source: https://commons.wikimedia.org/wiki/File:Nomascus_gabriellae_25.JPG

The yellow-cheeked gibbon (Nomascus gabriellae, Synonym: Hylobates gabriellae), also called the golden-cheeked gibbon, yellow-cheeked crested gibbon, the golden-cheeked crested gibbon, red-cheeked gibbon, or the buffed-cheeked gibbon, is a species of gibbon native to Vietnam, Laos, and Cambodia.