The eastern black-crested gibbon[1], also called the Cao-vit crested gibbon or Cao-vit Black-crested Gibbon, is a gibbon native to northern Vietnam and southeast China.
- Adult males and juveniles have an all-black coat, while females are tan, with some black hairs appearing on the limbs as they age.
- Both males and females have a large crest of black fur on their heads.
- The crest measures approximately 10 by 3 cm. Also, females have distinctive white rings on their faces.
- Babies are born reddish brown and turn black in 5 to 6 months.
- The hind legs are 70.4% the length of the front legs, which is somewhat longer than other black-crested gibbons (Nomascus species).
