Chlorocebus is a genus of medium-sized primates from the family of Old World monkeys. There are six species currently recognized, although some classify them all as a single species with numerous subspecies. This article uses the term Chlorocebus consistently for the genus and the common names only for the species. these monkeys is sub-Saharan Africa from Senegal and Ethiopia down to South Africa. However, in previous centuries, a number of them were taken as pets by slavers, and were transported across the Atlantic Ocean to the Caribbean islands, along with the enslaved Africans. The monkeys subsequently escaped or were released and became naturalized.
The dorsal fur of Chlorocebus monkeys varies by species from pale yellow through grey-green brown to dark brown, while the lower portion and the hair ring around the face is a whitish yellow. The face, hands, and feet are hairless and black, although their abdominal skin is bluish. Males have a blue scrotum and red penis. Rather, they are semi-arboreal and semi-terrestrial, spending most of the day on the ground feeding and then sleeping at night in the trees. However they must drink each day and are dependent on water, so they are never far from rivers or lakes. Like most other Old World monkeys, they have cheek pouches for storing food. They are diurnal, and are particularly active in the early morning and in the later afternoon or early evening.
The group hierarchy plays an important role: dominant males and females are given priority in the search for food, and are groomed by subordinate members of the group. They exhibit female philopatry, a social system whereby the females remain in the same home range they were born in and males leave once sexually mature. These monkeys are territorial animals, and a group can occupy an area of approximately .06 to 1.78 square kilometres (0.023 to 0.69 sq mi). They use a wide variety of vocalizations. They can with warn off members of other groups from their territory, and they can also warn members of their own troop of dangers from predators, using different calls for different predators. Monkeys scream when they are disciplined by members of the troop. They will eat leaves, gum, seeds, nuts, grasses, fungi, fruit, berries, flowers, buds, shoots, invertebrates, bird eggs, birds, lizards, rodents, and other vertebrate prey. Their preferred foods are fruit and flowers, a seasonal resource that is varied to cope with changes in food availability. On the island of Saint Kitts, they will commonly steal brightly coloured alcoholic drinks left behind by tourists on the beach. Many tourists have also found out these monkeys will deliver a powerful bite if they are cornered or threatened. Males do not take part in raising the young, but other females of the group (the "aunties") take part in sharing the burden. The dominance hierarchy also comes into play, as the offspring of the more dominant group members get preferential treatment. The gestation time is about 163–165 days and births are typically of a single young. The births usually happen at the beginning of the rainy season, when there is sufficient food available. On the island of Barbados, farmers complain about the monkeys damaging their crops, and many try to find ways to keep them at bay. On Halloween of 2006 a monkey was suspected of causing an island-wide 8-hour blackout. The monkey apparently climbed a light pole and tripped an 11,000- and 24,000-volt powerline early that morning.In Africa, many monkeys are killed by powerlines, dogs, vehicles, shooting, poisoning, and hunting, both as a food source and as a source of traditional medicines.
