Old World Monkeys: Cercopithecidae

Old World monkeys are diurnal (active during the day). Most are arboreal (tree-dwelling), traveling on all fours. They can also leap, using the tail for balance. Some species use some brachiation (brake-ee-AY-shun, a type of locomotion in which an animal swings below branches using its arms. Social groups vary in size. Larger groups may split into subgroups when foraging. They are polygynous (puh-LIH-juh-nus), with males having several partners. Females have single births. Young females leave their birthplace, while young males stay with the group.