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White-Faced Saki Monkey

male

female
Scientific Name: Pithecia pithecia
Range: Southern and eastern Venezuela, Guyana, Suriname, French Guiana, and northeastern Brazil
Habitat: Tropical rainforests
Natural Diet: Fruit, leaves, flowers, small mammals and small birds
Zoo Diet: Commercial primate biscuit, canned primate food, vegetables, fruit, nuts, cottage cheese and yogurt
Physical
Characteristics:
Males have white faces; females have dark faces.  Their fur is thick, coarse, shaggy, and long.  They do not have prehensile (able to grasp or hold something) tails.  Sakis weigh about 3-4 pounds.  They are 11-19 inches long, head and body.  Their tails are 10-22 inches long.
Behavior: Saki monkeys are usually seen alone or in pairs.  They often live in groups of up to twelve.  They are diurnal (active during the day).  Sakis stay in the canopy of the rainforest most of the time and rarely come to the ground, except to feed at the shrub layer.  At night they sleep coiled on branches. 
Reproduction: Females have one young at a time.  They usually give birth in late November or December.  Infants cling to the mother’s belly; later they cling to the back.  Born with brown fur, at two months old the males begin changing color to black with white faces, but the females stay brown.  After six months, the young are independent.
Notes: Saki monkeys can leap as far as 30 feet between branches.  They have strong canine teeth which enables them to crack open the hard shells of nuts and seeds.  If threatened, they fluff up and shake their body hair.  Then they stomp their feet with their backs arched.