Formosan rock macaques are hunted for their meat and for the damage they do to crops.

Subspecies
None.

Life span
The lifespan of rock macaques in not known.

Statistics
Body length: 40-55cm, Tail length: 26-45cm, Weight: 4-8kg.

Physical description
Rock macaques have a dark brown coat and a moderately long tail.

Distribution
Rock macaques are native to Taiwan, but have been introduced to Japan.

Habitat
These macaques often live in areas with few or no trees, such as grassland.

Diet
This species feeds on leaves, fruit, insects and crustaceans.

Behaviour
Rock macaques live in variable groups, such as 1 male: multi-female or multi-male: multi-female groups. There tend to be 2-8 males in a troop, with a ratio of 1.25 males to 1.5 females. Rock macaques are diurnal, and spend their time in the trees and on the ground.

Reproduction
After a gestation period of 165 days, females give birth to one young, which weighs about 400g at birth.

Conservation status
Rock macaques are listed as Vulnerable by the IUCN Red List.