The blue duiker is a small antelope; in fact, it is the smallest duiker. The head-and-body length is typically between 55 and 90 centimetres (22 and 35 in). It reaches 32–41 centimetres (13–16 in) at the shoulder and weighs nearly 3.5–9 kilograms (7.7–19.8 lb). P. m. anchietae is the largest subspecies. Sexually dimorphic, the females are slightly larger than the males. The blue duiker is characterised by a flat forehead, large eyes, small ears with a line of white, large nostrils, a broad mouth and agile lips. The dark tail measures slightly above 10 centimetres (3.9 in). A remarkable feature of the tail is the row of white crinkly hairs on either flank that reflect light efficiently, so that when the animal moves its tail up and down, it looks like a luminous signal in the dark habitat. The duiker has short, spiky horns, around 5 centimetres (2.0 in) long and hidden in hair tufts.

YHIt has a rough, reddish sandy coat flecked in white. The head, neck and legs are less flecked and somewhat yellowish, while the inside of the ears, eye-rings, mouth area, throat and underside are white. There is a black "bridge" to the nose and a dark scent gland in front of the eye. It stands only 21" (45–55 cm) at the shoulder and weighs slightly more than 20 pounds (8–12 kg). The short tail of the Cape grysbok measures 4 to 8 cm and is almost invisible. Males have short, sharp and straight horns about 8 cm long, which are smooth. The Cape grysbok can fluff out the fur at its rear end to make itself look bigger.

Female dik-diks are somewhat larger than males. The males have horns, which are small (about 7.6 centimetres or 3 in), slanted backwards and longitudinally grooved. The hair on the crown forms an upright tuft that sometimes partially conceals the short, ribbed horns of the male. The upper body is gray-brown, while the lower parts of the body, including the legs, belly, crest, and flanks, are tan. A bare black spot below the inside corner of each eye contains a preorbital gland that produces a dark, sticky secretion. Dik-diks insert grass stems and twigs into the gland to scent-mark their territories.

Colouration of this species varies widely over its vast geographic range. There are 14 subspecies described, 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. Only the male has horns and these can grow to 11 cm (4.3 in) long

Günther's dik-dik is one of the smallest ungulates in Africa, weighing 3–5 kilograms (6.6–11.0 lb) when fully grown. It has a yellowish-gray to reddish-brown coat, black hooves, small heads with long necks and large ears with white insides. Belly, chin, breast, throat and inner thighs are cream or white. The tail is short (~3–5 cm). Males are horned, with horn length (~9.8 cm) varying between individuals. Although the horn cores are only present in males, gender identification can be difficult from a distance. Females are larger and lack horns.

The klipspringer is a small, sturdy antelope reaching 43–60 centimetres (17–24 in) at the shoulder. The head-and-body length is typically between 75 and 115 centimetres (30 and 45 in). It weighs from 8 to 18 kilograms (18 to 40 lb). The klipspringer is sexually dimorphic; females are slightly larger and heavier than the males. The tail measures 6.5–10.5 centimetres (2.6–4.1 in). Prominent facial features include the brown forehead, short ears marked with black, prominent preorbital glands near the eyes, and white lips and chin. The horns, short and spiky, present only on males, typically measure 7.5–9 centimetres (3.0–3.5 in); the maximum recorded horn length is 15.9 centimetres (6.3 in).

The mountain reedbuck averages 75 cm (30 in) at the shoulder, and weighs around 30 kg (66 lb). It has a grey coat with a white underbelly and reddish-brown head and shoulders. The male has ridged horns of around 15.2 cm (6.0 in), which curve forwards. Both sexes have a dark scent patch beneath the ears.

The oribi is a small, slender antelope; it reaches nearly 50–67 centimetres (20–26 in) at the shoulder and weighs 12–22 kilograms (26–49 lb). The head-and-body length is typically between 92 and 110 centimetres (36 and 43 in). Sexually dimorphic, males are slightly smaller than females (except for O. o. ourebi, in which females are smaller). This antelope features a slightly raised back, and long neck and limbs. The glossy, yellowish to rufous brown coat contrasts with the white chin, throat, underparts and rump. The bushy tail, brown to black on the outside, has white insides (except in O. o. hastata, that has a completely black tail).

Red forest duikers have a body length of up to 1 m, a typical shoulder height of 43 cm, and an average mass of 14 kg. Both sexes have short, straight horns about 6 cm long, although in females they may be smaller in size. Towards the base, the horns have coarse rings and longitudinal striations, but they are smooth towards the tips. The longest recorded length of horns for the red forest duiker is 11 cm. The red forest duiker is a rich reddish-brown in color, although the underparts are typically paler. The hairs on the chin, throat, and insides of the ears are commonly a shade of white. A tuft of reddish-brown and black hairs grow between the horns, and the tail has a white tip.

The royal antelope is the smallest antelope in the world; it is the smallest ungulate and ruminant as well.  Bates's pygmy antelope is only slightly larger. The royal antelope reaches merely 25 centimetres (10 in) at the shoulder and weighs 2.5–3 kilograms (5.5–6.6 lb). The head-and-body length is typically 40 centimetres (16 in). A characteristic feature is the long and slender legs, with the hindlegs twice as long as the forelegs – a remarkable similarity to the hare. The thin tail, 5–8 centimetres (2.0–3.1 in) long, is white on the underside, ending in a white tuft. The species is sexually dimorphic, with females being larger than males. Only males possess horns, these being short, smooth, ventrally reflexed spikes measuring 2.5–3 centimetres (1.0–1.2 in) long.

It is similar in size to the gray duiker, but has a stockier body and elongated fur over the hindquarters. It stands about 20" (45–60 cm) at the shoulders and weighs only 7–11.5 kg. Its coat is reddish-brown which is streaked with white; eye-rings, around mouth, throat and underside are off-white. The males have stubby horns, which are widely spaced. Sharpe's grysbok has a short deep muzzle with large mouth and heavy molar (grinding) teeth. The short neck and face on a long-legged body result in a high-rump posture when browsing.

Steenbok resemble small Oribi, standing 45–60 cm (16"-24") at the shoulder. Their pelage (coat) is any shade from fawn to rufous, typically rather orange. The underside, including chin and throat, is white, as is the ring around the eye. Ears are large with "finger-marks" on the inside. Males have straight, smooth, parallel horns 7–19 cm long (see image left). There is a black crescent-shape between the ears, a long black bridge to the glossy black nose, and a black circular scent-gland in front of the eye. The tail is not usually visible, being only 4–6 cm long.