The Vervet (or Green) Monkey (Chlorocebus pygerythrus) is an Old World monkey in the family Cercopithecidae. They range from Ethiopia and Somalia south to South Africa. They inhabit savanna lands and mountains up to 4,000 m (13,100 ft). Males vary in size from 45 to 85 cm (18-34 in), and weigh between 3.5 to 7.5 kg (7.5-16.5 lb), while females, range from 40 to 60 cm (16-24 in) in size and between 2.5 to 5.5 kg (5.5-12 lb) in weight. Both have tail lengths that can vary from 50 to 115 cm. The pigmentation of the male Vervet Monkey's scrotum is a vivid blue that pales when the animal falls in social rank. The Vervet Monkey eats mainly fruit but it also supplements its diet with leaves, seeds, insects and small rodents. It has been known to destroy crops in Kenya and was classified as a vermin in South Africa, allowing it to be shot without previously obtaining a permit, up until 2003. It commonly lives in groups or "troops" of 20 or more, however the size of the group is often smaller than 20. Its gestation period is 7 months with a single offspring produced and is known to have a life span of up to 20 years. The Vervet Monkey appears to possess what has been called the "rudiments of language". Reference: http://en.wikipedia.org/wiki/Vervet_Monkey