Macaca cyclopis (Swinhoe, 1863)

Body Size

Physical characteristics: The Formosan rock macaque, also called the rock macaque, has a body length of 50–60 cm and a body weight of 5–12 kg, with females generally smaller than males. Its moderately long tail measures 26–45 cm.

Fur Coloration

This macaque’s fur is brown or gray.

Cheek Pouches

Like all other macaques, it has specialized pouch-like cheeks that let it temporarily hoard gathered food, which it eats later when it is in a safe location.

Litter Size

Reproduction: Formosan rock macaques usually give birth to a single offspring per birth.

Estrus Physical Traits

During the female’s estrus, the perineum swells at the base of the tail, and additional swelling also occurs along the thighs.

Mating Season

Their mating season runs from October to January.

Gestation Period

Gestation lasts approximately five and a half months.

Birthing Period

Females give birth between spring and summer.

Infant Care

Females are solely responsible for nursing their young. Infant macaques are carried in their mother’s arms for 2–3 months.

Juvenile Independence

Young macaques are not fully independent of being carried by their parents until they reach one year old.