The vervet monkey (Chlorocebus pygerythrus), or simply vervet, is an Old World monkey of the family Cercopithecidae native to Africa. The term “vervet” is also used to refer to all the members of the genus Chlorocebus. The vervet monkey has a black face with a white fringe of hair, while the overall body colour is mostly grizzled-grey. The males of all species have a pale blue scrotum and a red penis. The species exhibits sexual dimorphism, the males are larger in weight and body length.