The common duiker, Sylvicapra grimmia, also known as the grey or bush duiker, is a small antelope with small horns found in west, central, east, and southern Africa- essentially everywhere in Africa south of the Sahara, excluding the Horn of Africa and the rainforests of the central and western parts of the continent. They are active both day and night, but become more nocturnal near human settlements.
Colouration of this species varies widely over its vast geographic range. As many as 19 subspecies are thought to exist, ranging from chestnut in forested areas of Angola to grizzled gray in northern savannas and light brown shades in arid regions. It grows to about 50 cm (20 in) in height and generally weighs 12 to 25 kg (26 to 55 lb); although females are generally larger and heavier than the males. The males’ horns can grow to 11 cm (4.3 in) long.
As long as they have vegetation to eat (from which they get some water), they can go without drinking for very long periods. In the rainy season, they will frequently not drink water at all, instead obtaining fluids from fruits. They will often scavenge for these fruits below trees in which monkeys are feeding.
Generally, they are found in habitats with sufficient vegetation cover to allow them to hide—savanna and hilly areas, including the fringes of human settlements.