Primates

Cercopithecidaes are most of the Old World monkeys which include Baboons [ba-'bün], Mangabeys ['ma[ng]-g&-(")bE], Mandrills ['man-dr&l], Guenons ['gwe-n&n], Macaques [m&-'kak], Patas Monkeys, as well as a few others are all African primates, although Macaques also live in Asia and Gibraltar. Langurs [lä[ng]-'gur], Proboscis Monkeys [pr&-'bä-s&s] and Colobus Monkeys ['kä-l&-b&s] are both Asian primates. The Cercopithecidae are broken into two subfamilies, the Cercopithecinae include Baboons, Mangabeys, Mandrills, Guenons, Macaques, Patas Monkeys (as well as several others). While Colobus, Proboscis and Langurs make up the subfamily Colobinae.

Many of the Cercopithecidaes sleep in trees or cliff faces, their days are spent in large groups foraging for food. Adult males are twice the size as females and are more aggressive. Cercopithecines have cheek pouches that allow the temporary storage of food.

Colobinae do not have cheek pouches, but do have sacculated stomachs, their stomachs have sack-like compartments called "saccules". In these saccules are bacteria which break down plant cellulose to provide more useable calories. They also have also have unusually long intestines that increase the absorption of nutrients.

Abyssinian Black & White Colobus Monkey
Agile Mangabey
Allen's Swamp Monkey
Angolan Black & White Colobus Monkey
Anubis (or Olive) Baboon
Assamese Macaque
Banded Leaf Monkey
Barbary Macaque
Black Colobus Monkey
Black Mangabey
Black Snub-Nosed Langur
Blue Monkey
Bonnet Macaque
Brelich's Snub-Nosed Langur
Campbell's Monkey
Capped Langur
Celebes Macaque
Chacma Baboon
Cherry-Crowned Mangabey
Crab-Eating (or Long-Tailed) Macaque
Crowned Guenon
De Brazza's Monkey
Diana Monkey
Douc Langur
Drill
Dryas Monkey
Dusky (or Spectacled) Leaf Monkey
Formosan Rock Macaque
François' Leaf Monkey
Gelada Baboon
Geoffroy's Black & White Colobus Monkey
Golden Langur
Gorontalo Macaque
Gray-Cheeked Mangabey
Greater White-Nosed Monkey
Guinea Baboon
Hamadryas Baboon
Hamlyn's Owl-Faced Monkey
Hanuman Langur
Heck's Macaque
Japanese Macaque (or Snow Monkey)
Javan Black Leaf Monkey
L'Hoest Monkey
Lesser White-Nosed Monkey
Lion-Tailed (or Crab-Eating) Macaque
Mandrill
Maroon Leaf Monkey
Mentawai Island Leaf Monkey
Mentawai Island Macaque
Mona Monkey
Moor Macaque
Moustached Monkey
Muna-Butung Macaque
Nilgiri Langur
Ochre Macaque
Olive (or Anubis) Baboon
Olive Colobus Monkey
Patas Monkey
Pere David's Macaque
Phayre's Leaf Monkey
Pig-Tailed Langur
Pig-Tailed Macaque
Preuss's Monkey
Proboscis Monkey
Purple-Faced Langur
Red-Bellied Monkey
Red Colobus Monkey
Red-Eared Nose-Spotted Monkey
Red-Tailed (or Schmidt's) Monkey
Rhesus Macaque
Sclater's Monkey
Schmidt's (or Red-Tailed) Monkey
Silvered Leaf Monkey
Snow Monkey (or Japanese Macaque)
Snub-Nosed Langur
Spectacled (or Dusky Leaf) Monkey
Stumptailed Macaque
Sulawesi Crested Macaque
Sun-Tailed Monkey
Talapoin Monkey
Tonkean Macaque
Tonkin Snub-Nosed Langur
Toque Macaque
Vervet Mangabey
Western Black & White Colobus Monkey
White-Collared Mangabey
White-Fronted Leaf Monkey
Wolf's Monkey
Yellow Baboon
Yellow Banded Leaf Monkey
Zaire Diana Monkey