Common duiker in Swahili: nysa (Sylvicapra grimmia)
Shoulder height: 50 cm; weight: 20 kg. This anomalous duiker holds itself more like a steenbok and is the only member of its family to occur outside of forests. Grey or grey-brown in colour, it is most easily separated from other small antelopes by the black tuft of hair that sticks up between its horns. It occurs throughout Tanzania, and tolerates most habitats except for true forest and very open country.