Cao-vit Gibbon Nomascus nasutus

Cao-vit Gibbon Nomascus nasutus

Cao-vit Gibbon Nomascus nasutus

Critically Endangered

Location: China, Vietnam

The Cao Vit Gibbon belongs to genus Nomascus and are found in Vietnam and southern China. They are known to communicate in species-specific song when defining territory or attracting mates. They sing in regional accents to each other and form breeding pairs.

The Cao Vit Gibbon is critically endangered on @IUCNredlist in #China #Vietnam. 80% of their forest home has been destroyed for #palmoil #timber and other crops. Help them survive by joining the brand #Boycott4Wildlife

The Cao Vit Gibbon is listed as Critically Endangered because of an observed population decline of at least 80% over the past 45 years (three generations), primarily due to hunting and habitat loss. This species historically inhabited lower montane and limestone forests, in a wet tropical monsoon climate, at an altitude range of 50-900 m (Tien 1983). The known population is now entirely restricted to limestone forests on poorly accessible karst outcrops ranging between 500-930 m in elevation (Rawson et al. 2011). It is now restricted to the Cao Vit Gibbon Conservation Area, Vietnam, and Bangliang Nature Reserve, China, which comprises a total of 2,500 ha of limestone forest straddling the Sino-Vietnamese border (Fan et al. 2013a).

Numerous conservation efforts of these rarest of small primates are ongoing.

Support conservation for this animal

Flora & Fauna International


Rawson, B.M., Roos, C., Nguyen, M.H., Bleisch, W., Geissmann, T. & Fan, P.F. 2020. Nomascus nasutus. The IUCN Red List of Threatened Species 2020: e.T41642A17969578. Downloaded on 28 January 2021.

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Published by Palm Oil Detectives

Hi, I’m Palm Oil Detective’s Editor in Chief. Palm Oil Detectives is partly a consumer website about palm oil in products and partly an online community for writers, artists and musicians to showcase their work and express their love for endangered species. I have a strong voice for creatures great and small threatened by deforestation. With our collective power we can shift the greed of the retail industry and influence big palm oil to stop cutting down forests. Be bold! Be courageous! Join me and stand up for the animals with your art and your supermarket choices!

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