Saki

Any of seven species of arboreal South American monkeys having long nonprehensile furred tails. The �true� sakis of the genus Pithecia are approximately 30 - 50 cm (12 - 20 inches) long, not including the bushy, tapering tail of 25 - 55 cm. Females generally weigh less than 2 kg (4.4 pounds) and males more than 2 kg. These sakis are covered with long, coarse hair that falls like a hood