The Tonkin snub-nosed monkey is one of the most endangered primates on the planet, found only in a few isolated forest fragments among the karst limestone peaks of northern Vietnam.
Its striking facial appearance – protuberant pink lips and upturned nose; powder-blue mask; and patches of pale-blue skin around its eyes – gives the distinct impression that this monkey has been applying heavy make-up without the aid of a mirror. Its body fur is mainly black, with creamy-white underparts and elbow patches. Other notable features include an orange throat patch and an extremely long, white-tipped tail.
The Tonkin snub-nosed monkey lives in extended family groups – comprising an adult male plus several females and their offspring – that often come together to sleep or feed, but sightings have become increasingly rare; its range has shrunk to just a handful of locations and numbers at most of these have been declining dramatically.