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Topi
Damaliscus lunatusThe fast, dark-coated antelope of the open plains.
The topi is one of East Africa's most striking and speedy antelopes - a reddish-coated grazer with dark "stocking" legs and lyre-shaped horns. It is watched over by territorial males that scan from termite mounds, and on the Serengeti it migrates with the wildebeest. One of the fastest antelopes in Africa, it can hit up to about 70 km/h.
Topi Quick Facts
What Is the Topi?
The topi (Damaliscus lunatus) is a large plains antelope of the hartebeest tribe (Alcelaphini), close kin to the hartebeest, the wildebeest and the southern tsessebe. The East African form - the one you meet in Tanzania - is generally treated as the subspecies Damaliscus lunatus jimela, often just called "topi" (though some authorities split the regional forms into separate species, a treatment that remains debated); it was first described from an animal shot in what is now Tanzania.
Its range is East and Central African, not just Tanzanian. Topis occur in Kenya, Tanzania, Uganda, South Sudan and the DRC (and Rwanda), and are regionally extinct in several countries. Tanzania is a global stronghold: the Serengeti holds one of the largest topi populations on Earth, and the Ruaha topi is a distinct subspecies.
Why “Topi”?
"Topi" is the common name for this antelope across East Africa (in Swahili it is sometimes called nyamera). The scientific name, Damaliscus lunatus, places it in the genus Damaliscus; the species name lunatus ("moon-shaped") refers to the crescent-like sweep of the horns. The southern African relative is the tsessebe, and other regional names include tiang and sassaby.
Signature Features
A topi is built like a lean, high-shouldered sprinter: an elongated head, a hump at the base of the neck, and long legs. The coat is reddish-brown to purplish with a glossy sheen, set off by dark patches on the face, upper forelegs and thighs - the famous "blue socks" on the lower legs. Males are larger and darker than females.
Both sexes carry horns: heavily ringed and lyre-shaped, sweeping up and back (30-50 cm). A topi is easily told from a hartebeest by these lyre horns and by its dark legs with a pale rump - the hartebeest has pale legs, a dark back, and horns that kink out to the side.
How Big Is a Topi?
Topis stand about 100-130 cm at the shoulder (males average ~115 cm) and weigh roughly 90-160 kg. They are smaller than a hartebeest's bulk but share its sloping, racehorse build - high withers and a back that appears to slope downward to the tail.
Horns & Defence
Both sexes are horned. The horns are ringed and lyrate, curving up and back with a graceful crescent profile; males' are thicker and longer (up to about 50 cm). Males use them in ritualised contests for territory, but serious injury is rare - most rank is settled by posture and display from a vantage point.
Habitat & Range
Topis are animals of the open grassland, savanna and floodplain. They avoid dense woodland and forest, preferring medium-height green grass, and they often use termite mounds as look-out posts to scan for predators. Where woodland meets grassland they keep to the edge, using shade in the heat of the day. They are most abundant where green grass lingers into the dry season, usually near water.
Topi in Tanzania
Within Tanzania, topis are a signature plains antelope of the Serengeti (enormous migratory and resident populations) and are also found in Ruaha (the Ruaha topi subspecies) and Katavi. The species' core, though, spans the border into Kenya's Maasai Mara and beyond.
Serengeti, Tanzania
One of the world's largest topi populations; they migrate with the wildebeest and zebra across the short-grass plains.
Serengeti safariRuaha, Tanzania
Home to the Ruaha topi subspecies, in the dry miombo-woodland plains of the south.
Ruaha safariKatavi, Tanzania
Floodplain grasslands hold good numbers of topi in one of Tanzania's wildest parks.
Katavi safariKenya & the wider range
Maasai Mara, plus Uganda, South Sudan and the DRC, complete the East and Central African distribution.
Behavior & Social Life
Topis are exceptionally gregarious - usually in herds of 15-20, sometimes hundreds - and have one of the most flexible social systems of any antelope. Sedentary populations form small herds led by a territorial male; during the migration, huge mixed aggregations form and males set up temporary territories or leks from which they display to passing females.
They mix readily with other grazers - wildebeest, zebra and even ostrich - and territorial males spend much of the day on termite mounds watching for danger. Coordination comes from shared alarm signals and vigilant look-outs, not from a "leader" guiding the herd.
Diet & Feeding
Topis are specialized grazers - grass makes up almost all of their diet. Their narrow muzzle and flexible lips are built for selective feeding: they take small, rapid bites of the freshest, most tender growth. When green grass is available they can go without drinking; on dry grass they must drink daily. This specialization makes them vulnerable when pastures fail or are converted to farmland.
Predators & Defense
Topis fall to lions, leopards, cheetahs and spotted hyenas (hyenas are especially fond of them), as well as African wild dogs; jackals take newborn calves. Their defence is speed - up to about 70 km/h in a burst - plus constant vigilance from mound-top males and tight herd bunching. Curiously, when other grazing species are present, a topi's own predation rate tends to drop.
Young & Lifespan
After a gestation of about 8 months, a single calf is born and hidden in cover at first, then joins the herd. Calving is timed to peaks of grass abundance, and females can even delay labour if they sense immediate danger. Lifespan is around 15 years in the wild.
Conservation Status
As a species the topi is listed Least Concern, but the picture is sharper at the regional level: the East African topi is assessed as Near Threatened (a regional assessment, distinct from the species-level listing) with a decreasing trend, and the animal is regionally extinct in six countries. Total population is around 300,000.
Main threats are habitat loss to agriculture, competition with livestock (and with the booming wildebeest numbers) and poaching. Tanzania's protected plains - Serengeti above all, plus Ruaha and Katavi - are critical strongholds.
Safari Experience
For a Tanzania safari, the topi is frequently encountered in suitable Serengeti habitat - particularly where resident and migratory herds occur - and is a good sight in Ruaha and Katavi. Look for the dark "sock" legs and the male on a termite mound, and watch the massed herds moving with the Great Migration. They are sensitive to habitat loss, so enjoy them with a conservation-minded operator.
Comparisons
The topi is constantly confused with its cousin the hartebeest. On the Serengeti they share the plains, but the marks differ:
| Feature | Topi | Hartebeest (kongoni) |
|---|---|---|
| Coat | Reddish-purple, dark leg "socks", pale rump | Pale legs & belly, darker upper body |
| Horns | Lyre-shaped, sweep up & back | Sweep out to the side then kink back, on a bony ridge |
| Build | High-shouldered, glossy | Long narrow head, similar slope |
| Diet | Almost entirely grass (selective) | Selective grazer (browse <4%) |
| Social | Herds + territorial males / leks | Territorial males, small herds |
Did You Know?
Termite-mound watchtower
Territorial males spend their days perched on termite mounds scanning the plains for predators and rivals.
Blue socks
The dark patches on the lower legs look like stockings - a quick field mark that separates topi from hartebeest.
Up to about 70 km/h
One of the fastest antelopes in Africa, using speed to escape lions, cheetahs and hyenas.
Almost all grass
Unlike many antelopes, the topi eats almost nothing but grass, selected bite by bite with a narrow muzzle.
Flexible families
It has one of the most variable social systems of any antelope - from sedentary herds to migratory leks.
Near Threatened in the east
Least Concern as a species, but the East African topi is regionally Near Threatened and declining, gone from six countries.
On the Serengeti a topi stands on its termite mound like a sentry that forgot to clock off. Below it the herd grazes in tight, dark-legged clusters, and when one mound-sitter bolts, the whole plain reads the signal. They are fast enough to outrun almost anything, yet they win mostly by watching - and by never being the only antelope in the neighborhood.
Gallery
Frequently Asked Questions
Damaliscus lunatus. The East African form is generally treated as the subspecies D. l. jimela. It belongs to the hartebeest tribe (Alcelaphini).
Across East and Central Africa: Kenya, Tanzania, Uganda, South Sudan and the DRC (and Rwanda). Tanzania's Serengeti and Ruaha are major strongholds, but the range is regional, not Tanzania-only.
Yes - abundantly in the Serengeti, and also in Ruaha (Ruaha topi subspecies) and Katavi. They are commonly encountered on a Serengeti plains drive.
They are specialized grazers: grass makes up almost all of their diet. A narrow muzzle lets them select the tenderest growth; with green grass they need not drink, but on dry grass they drink daily.
Topi are darker with lyre horns sweeping up and back and dark legs/pale rump; hartebeest have pale legs, a dark back, and horns that kink out to the side. Both are in the same tribe.
Yes. Both sexes carry ringed, lyre-shaped horns; males' are thicker and longer (up to about 50 cm).
It can reach up to about 70 km/h in a burst - among the fastest antelopes in Africa.
Highly gregarious and flexible: sedentary small herds led by a territorial male, or huge migratory aggregations with males holding temporary territories or leks. They mix with wildebeest, zebra and ostrich.
Lions, leopards, cheetahs, spotted hyenas (especially) and African wild dogs; jackals take calves.
They stand about 100-130 cm at the shoulder and weigh roughly 90-160 kg.
Least Concern as a species, but the East African topi is Near Threatened and decreasing, regionally extinct in six countries, pressured by farmland, livestock competition and poaching.
References & Further Reading
- African Wildlife Foundation - Topi: reddish-brown to purplish coat, dark face/foreleg/hip patches, yellowish-tan "stocking" legs; both sexes lyre horns 30-40 cm; weight 90-147 kg; height 104-126 cm; lifespan 15 yrs; gestation 8 months; population ~300,000; 5 subspecies; regionally extinct in 6 countries.
- Britannica - Topi: females ~20% smaller; males ~115 cm tall, 130 kg; horns 30-40 cm; one of the most variable social/mating systems (territories to leks); related to hartebeest and tsessebe.
- Wikipedia - Topi (D. l. jimela): Near Threatened (IUCN 3.1); found Kenya, Tanzania, Uganda, South Sudan, DRC, Rwanda; Serengeti migration joins wildebeest/zebra/gazelles; speeds exceed 80 km/h.
- Wikipedia - Damaliscus lunatus: Least Concern as species; selective grazer using elongated muzzle; drinks only when dry grass; uses termite mounds as vantage points; predation by lions, hyenas, jackals.
- Snapshot Serengeti - Topi vs Hartebeest: topi darker with sandy socks and black thigh/shoulder patches, lyre horns up-and-back; hartebeest pale legs, horns kink sideways; Serengeti topi 100% grazers.
- Animal Diversity Web - Damaliscus lunatus: diverse social organization; males establish territories attracting female herds; territories up to 4 km2.
