Vervet Monkey [Chlorocebus pygerythrus]
Males have a mass of 6kg and measure 1.1 m in length, whereas females are slightly smaller and weigh only 4kg. Vervet Monkeys have a silver-grey body with a marked black face. The ridge of the eyebrows is white, and so are the feet and tail tip. The genitals of adult males are vividly coloured to signal sexual status, namely a red penis and a blue scrotum.