Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammal
- Order
- Primates
- Family
- Cercopithecidae
- Genus
- Rhinopithecus
Habitat
This species primarily inhabits subtropical and tropical moist lowland forests in northern Vietnam, especially karst limestone hills and mountains. They prefer dense, high-canopy forests at elevations of 200-1200 meters. Their range is restricted to a few fragmented areas due to habitat loss.
Diet
Tonkin snub-nosed monkeys mainly eat young leaves, fruits, flowers, and buds from various trees in the forest. They forage in groups during the day, spending much of their time in the upper canopy, and may supplement their diet with bark or lichen when preferred foods are scarce. Feeding peaks in the early morning and late afternoon.
Behavior
These monkeys live in multi-male, multi-female groups of 10-60 individuals, with a clear hierarchy and strong social bonds. They are diurnal and arboreal, spending most of their time in trees, and exhibit territorial behaviors like vocalizations and displays to defend their range. They communicate through a variety of calls and grooming to maintain group cohesion.
Conservation Status
The IUCN classifies the Tonkin snub-nosed monkey as Critically Endangered, with a decreasing population trend due to habitat loss and hunting. Major threats include deforestation for agriculture and the illegal wildlife trade.