10 Facts About Francois' langur

Francois' langur, known as Francois' leaf monkey, the Tonkin leaf monkey, or the white side-burned black langur is a species of lutung and the type species of its species group.

Francois' langur is a medium-sized primate with black, silky hair.

Francois' langur has large salivary glands to begin the digestion of tough leaf fibers.

Francois' langur is diurnal and spends most of the day resting and foraging.

Francois' langur is selective in its diet, in Nonggang Nature Reserve, China, it primarily eats the young leaves of 10 different species of plants, only two of which are common within the reserve.

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Francois' langur chooses its sleeping habitat depending upon foraging availability.

Francois' langur has a restricted range of areas in which it can inhabit.

Population of Francois' langur has been on a steady decline for the past 30 years.

In Nonggang, where it is most prevalent, the natives believe that the Francois' langur has medicinal values, and have hunted them to make wine out of their bones, which they believe could cure fatigue and rheumatism.

In 2003, the National Forestry Bureau acknowledged the rapid decline in Francois' langur and agreed to increase law enforcement in this area to help protect them from hunters.