Quote: › The Japanese Macaque is diurnal and spends most of its time in forests. It lives in a variety of forest-types, including subtropical to subalpine, deciduous, broadleaf and evergreen forests, below 1500 m. It feeds on seeds, roots, buds, fruit, invertebrates, berries, leaves, birds eggs, fungi, bark and cereals. It has a body length ranging from 79 to 95 cm, with a tail length of approximately 10 cm. Males weigh from 10 to 14 kg, females, around 5.5 kg.

The Japanese Macaque is the most northerly-living non-human primate, living in mountainous areas of Honshū, Japan. It survives winter temperatures below -15 °C, and is perhaps most famous for the amount of time it spends relaxing in naturally heated volcanic hot springs.

The Japanese Macaque lives in troops 20-100 individuals in size usually subdivided into matrilineal groups consisting of many females and several males. On average, females outnumber males by 3 to 1. The females have a rigid hierarchy with infants inheriting their mother's rank. The males tend to be transient within the troop.

Females will copulate with an average of ten males during the mating season, though only about one third of the mountings will lead to ejaculation. Though pregnancies only occur during the mating season, heterosexual relations go on year-round. After a gestation period of 173 days, females bear only one baby, which weighs about 500 g at birth. This macaque has an average lifespan of 30 years.

source : http://en.wikipedia.org/wiki/Japanese_Macaque