The Vervet monkey (Chlorocebus aethiops) are classified as vermin in Africa, where they occur in large numbers. They feed on the ground and sleep in the trees. Vervet monkeys live a life constantly running from being killed by humans. Males vary in size from 45 to 85 cm and weigh between 3.5 to 7.5 kg, while females, range from 40 to 60 cm in size and between 2.5 to 5.5 kg in weight. It lives in groups of up to 20 individuals. The Vervet monkey can become 20 years of age.