There is a pair of pale-headed saki (PITHECIA PITHECIA) (CEBIDAE) in the Moscow Zoo. These rare monkeys of a rather original exterior inhabit forests of northern part of South America. Their fur is dense and soft, and tail lengthy and fluffy. These animals have received their name for white colouring of a front part of a head, forehead and throat, typical only for males. Females are lighter than males and monotonous. Pale-headed saki are absolutely arboreal and only sometimes they descend to the lower trees' limbs or in bushes searching for the food. In danger they are very fast and can make large jumps, thus their lengthy and fluffy tail flutters behind and, probably, promotes stability of flight.

Saki are active in day-time. They form pairs or small family groups of 2-5 animals. They eat different seeds, nuts, honey, leaves, colours, small mammals (rodents, bats) and birds. When they sleep on branches they coil up like a cat. Gestation lasts 163-167 days. There is a single young, it initially clings to the belly of the female. Later it moves on her back.