Green/Olive-Colored Monkeys

Allen's swamp monkeys are small, stocky monkeys with gray to brown fur and long tails. These highly social primates live in the swamp forests of central Africa, where they mostly spend their time in the trees. It was named after Joel Asaph Allen, an American zoologist.

Also known as the Southern talapoin, Angolan talapoin is a primate species in the Cercopithecidae family. Tail color varies from grayish-black to brownish-black above and is yellow or yellowish-gray below. The Angolan talapoin monkeys are among the smallest species of Old-World monkeys.

The Gabon talapoin, also called the northern talapoin, is a small species of African primate endemic to riverine habitats in Gabon, Equatorial Guinea, Cameroon, the far western Democratic Republic of the Congo, and the western Republic of the Congo.

The green monkey (Chlorocebus sabaeus), also called the sabaeus monkey, is an Old World monkey with golden-green fur, pale feet, and hands. Green monkeys' locomotion varies little, regardless of substrate or habitat. In nearly all circumstances, they move quadrupedally in the treetops or on the ground.

The Grivet monkey (Chlorocebus aethiops) is an Old World monkey with long tufts of white fur on the sides of its face. Grivet monkeys are very social animals. They travel in small groups and are among the few species to have groups with multiple males.

The Hamlyn's monkey (Cercopithecus hamlyni), also called the owl-faced monkey, is an Old World monkey inhabiting the Congo's bamboo and primary rain forests. Hamlyn's monkeys have unique feet and hands in elongated phalanges.

The lesser spotted-nosed monkey, lesser spotted monkey, or lesser white-nosed monkey (Cercopithecus petaurista) is a primate species in the Cercopithecidae family. The lesser spotted-nosed monkey is diurnal, arboreal, and cryptic.

The Malbrouck (Chlorocebus cynosuros) is an Old-World primate from Africa that belongs to the Chlorocebus genus. The species is sometimes classified as a subspecies of the green monkey (Chlorocebus pygerythrus) or the common grivet (Chlorocebus aethiops).

The mandrill (Mandrillus sphinx) is a primate of the Old-World monkey family (Cercopithecidae). It is among the two species in the Mandrillus genus and drill. Groups of mandrills can vary from a few individuals to 50 individuals.

The Mona monkey (Cercopithecus mona) is an Old World monkey living between Cameroon and Ghana in West Africa. Mona monkeys live in large groups of 5 to 50 individuals.

The Olive baboon (Papio anubis), also called the Anubis baboon, is a species of the Cercopithecidae family of Old-World monkeys. The name comes from the Egyptian god Anubis.

The Schmidt's red-tailed monkey, also called the red-tailed guenon, Schmidt's guenon, or black-cheeked white-nosed monkey is a primate species in the Cercopithecidae family. The Schmidt's red-tailed monkey is named for its red coloration on the underside of its tail, as well as the bicolor coloration of its tail as the reddish color increases from the base to the tip.

The toque macaque (Macaca sinica) is a red-brown Old World monkey endemic to Sri Lanka, known as the rilewa or rilawa. Its common name refers to the strand of hair on its head that resembles a brimless hat.