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Spider Monkey

Male Uakari

Uakari is the common name for the New World monkeys of the genus Cacajao. Both the English and scientific names are believed to have originated from indigenous languages. The uakaris are unusual among New World monkeys in that the tail length (15-18 cm) is substantially less than their head and body length (40-45 cm). Their bodies are covered with long, loose hair but their heads are bald. They have almost no subcutaneous fat, so their bald faces appear almost skull like. They have been observed both in small groups and in larger troops of up to 100. When traveling through the forest they move in the lower branches of the trees, though when foraging they also go up to the canopy. They eat fruit, nuts, buds and leaves. (Wiki.)

Face Of Male Mandrill

Black-Capped Squirrel Monkey And Baby leaping

The black-capped squirrel monkey (Saimiri boliviensis) is a South American squirrel monkey, found in Bolivia, Brazil and Peru. The squirrel monkeys are the New World monkeys of the genus Saimiri. Squirrel monkeys grow to 25 to 35 cm, plus a 35 to 42 cm tail. Male squirrel monkeys weigh 750 to 1100 g. Females weigh 500 to 750 g. Remarkably, the brain mass to body mass ratio for squirrel monkeys is 1:17, which gives them the largest brain, proportionately, of all the primates. Humans have a 1:35 ratio. (Wiki.)

Female White-Faced Saki With Baby

Endangered Species Of The Day

The white-faced saki (Pithecia pithecia), also known as the Guianan saki and the golden-faced saki, is a species of saki monkey, a type of New World monkey. This species lives in the understory and lower canopy of the forest, feeding mostly on fruits, but also eating nuts, seeds, and insects. Sakis of the Pithecia pithecia species display noticeable sexual dichromism in their coloration. Females have shorter hair than males, with brownish-grey fur and white or pale brown stripes around the corners of the nose and mouth. Males, on the other hand, have blacker fur, with a reddish-white forehead, face, and throat. It is listed as least concerned on the IUCN Red List. (Wiki.)

Pied Tamarin With Twins

Endangered Species Of The Day

The pied tamarin (Saguinus bicolor) is an endangered primate species found in a restricted area in the Brazilian Amazon Rainforest. This New World monkey is found within and just north of the city limits of Manaus, the capital of the Amazonas state of Brazil. Individuals live in groups of 2 to 15 members with little intra-group competition. Gestation lasts 140–170 days and mothers typically give birth to twins. Young tamarins are cared for primarily by the father and turned over to the mother only to nurse, however the entire group helps with the care of the young. Due to the destruction of their natural habitat the species is at risk. (Wiki.)