Vervet Monkey

© Nigel Dennis

Name

Vervet monkey (Chlorocebus pygerythrus)

Appearance

Male vervet monkeys measure about 1.1 m in length and weigh 6 kg. Females are slightly smaller, weighing only 4 kg.

Their bodies are silvery-grey in colour and their faces black. The ridge above their eyebrows, feet and tips of their tails are white. Males’ genitals are brightly coloured – the penis being red and the scrotum blue – to convey their sexual status.

Vervet Monkey Diet

The diet of the vervet monkey is omnivorous, feeding on fruits, flowers and leaves as well as insects. It can differentiate between green and ripe fruit, as primates are one of few mammals with colour vision.

Vervet Monkey Breeding

After a gestation period of 140 days, a single young is born. They breed seasonally in South Africa, and birthing occurs between the months of March and May. Birthing intervals could extend longer than a season depending on the availability of food.

Vervet Monkey Behaviour

Vervet monkeys are gregarious animals living in organised troops which are dominated by males. Their access to food resources is regulated by the hierarchy of dominance. Females stay with their natal group, whereas males leave the group when they reach puberty.

Habitat

Living mostly at the edges of forests, the vervet monkey occurs in a variety of environments in South Africa including dense, tall trees and ones that have permanent surface water.

Where They Are Found

In South Africa, only two monkey species can be found, namely the vervet and Samango monkey. Both species are tree dwellers and eat fruit, making them a threat to commercial fruit orchards. The vervet monkey is distributed throughout South Africa.

It can be found in areas of its habitat, including spaces of the ever-expanding, invasive wattle tree. This alien plant has enabled the vervet monkey to expand its historical range.