François’ langur

Trachypithecus francoisi

Harmonious harems

François’ langurs usually live in sociable groups of one adult male with several females and their young. The females develop their own hierarchy, while juvenile males eventually leave the harem to form bachelor groups.


  • Origin

    southern China and northern Vietnam

  • Habitat

    evergreen forests in karst mountains

  • Diet

    Leaves, flowers, buds, fruits, seeds

  • Status


  • Size

    60 cm

  • Weight

    5–7 kg

  • Gestation period

    6-7 months

  • Achievable age

    approx. 25 years

Threat Categories of IUCN

Under threat

François’ langurs are endangered in the wild due to forest clearance, the spread of agriculture, and illegal hunting. There are probably no more than 2,000 individuals living in their natural habitat in Vietnam and China.

Did you know?

The young are orange at birth and gradually darken to black over the following weeks.
Their stomachs have several chambers to help them digest the leaves they eat.

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