Extinct Monkeys

The Peruvian yellow-tailed woolly monkey (Lagothrix flavicauda), also called the yellow-tailed woolly monkey, is a New World monkey native to Peru. Peruvian yellow-tailed woolly monkey is among the rarest Neotropical primates and one of the largest mammals endemic to Peru.

The red-bellied monkey (Cercopithecus erythrogaster), also called the red-bellied guenon or white-throated guenon is a diurnal primate living in the trees of tropical rainforests or tropical areas in Benin and Nigeria. The red-bellied monkey was once considered extinct due to constant hunting for fur on its unique red belly and white front legs.

Miller's Langur (Presbytis canicrus), also called the Kutai Gray Langur, is the rarest of the four Hosei subspecies, all of which are native to the island of Borneo. One of the world's most endangered primates, Miller's langur, was once considered extinct until it was rediscovered in 2013.

The stump-tailed macaque, also known as the bear macaque, is an Old World monkey endemic to Cambodia, northeastern India, southwestern China, Myanmar, and Laos, from northwestern Peninsular Malaysia, Vietnam, and Thailand.

The sooty mangabey, also called the white-collared or white-crowned mangabey is a predominantly terrestrial Old-World monkey. Sooty mangabeys remember the location of the fallen fruit and can tell whether or not a tree is bearing fruit.

Black-crested mangabeys, also known as black mangabeys, are endemic to central Africa, occupying the Democratic Republic of the Congo, south of the Congo River (formerly known as the Zaire River), and likely extinct in Angola. They are mainly found in primary and secondary tropical forests, gallery forests, and swamps. Locals nicknamed these primates "baboon mangabeys" due to their resemblance to the baboon species.