White Rhino (Ceratotherium simum): Facts and Conservation

Appearance: a gray rhino with a square lip

A white rhino is a massive, barrel-bodied animal with a long head, short neck and a prominent muscular hump on the back of the neck. The hump holds the heavy ligaments that support the head, which the rhino carries low to the ground almost all the time while it grazes. The skin is thick and nearly hairless, apart from fringes on the ears and bristles at the tail tip.

The color ranges from yellowish brown to slate gray. In the field a rhino often takes on the color of the last mud it rolled in, so a white rhino can look reddish, dark brown or pale.

Its best-known feature is the mouth. The upper lip is broad, flat and square, like a lawnmower blade, which is why the species is also called the square-lipped rhinoceros. There are two horns on the snout, one behind the other. The front horn is the larger, commonly around 60 cm (24 in) long, and in exceptional cases well over 1.5 m (5 ft). The horns are solid keratin, the same protein as hair and fingernails, with no bone inside. The ears are long, tube-shaped and can swivel independently. Each foot has three toes.

How big is a white rhino?

The white rhino is the biggest of the five living rhino species. Bulls are clearly larger than cows:

Exceptional bulls of up to about 3,600 kg (7,900 lb) are considered reliable records; claims of 4,500 kg (9,900 lb) have never been verified. On average a white rhino is heavier than a hippopotamus, although the two species overlap a lot in weight. For the full comparison, see how much does a rhino weigh.

For such a heavy animal it is surprisingly quick. A white rhino can reach about 50 km/h (31 mph) over a short distance.

Habitat and range

White rhinos live in open grassland and savanna woodland, where short grasses grow close to water, shade trees and mud wallows. They drink once or twice a day when water is available but can go several days without it in dry spells.

There are two subspecies. The southern white rhino (C. s. simum) lives in southern Africa. South Africa holds the great majority of all white rhinos, with smaller populations in Namibia, Botswana, Zimbabwe, Kenya, Uganda, Eswatini, Zambia and Mozambique, many of them reintroduced or introduced from South African stock. The northern white rhino (C. s. cottoni) once ranged across parts of Uganda, South Sudan, the Central African Republic, Chad and the Democratic Republic of the Congo, but it is now gone from the wild. Only two females survive, both in Kenya; see how many northern white rhinos are left.

Diet: a living lawnmower

The white rhino is one of the largest pure grazers alive. It feeds almost entirely on grass, and it prefers short grasses, which it crops with its wide lips. African rhinos have no front teeth, so the lips do the cutting while the large cheek teeth grind the food.

A white rhino spends about half the day feeding, mostly in the cooler morning, evening and night, and rests in shade during the heat. By keeping patches of grass cropped short, rhinos create “grazing lawns” that are used by smaller grazers such as impalas, wildebeest and zebras. Scientists regard the species as an ecosystem engineer of the savanna for this reason. Its relative the black rhino does the opposite: it browses leaves and twigs with a pointed, hooked lip.

Behavior and social life

The white rhino is the most social rhino. Cows and their calves, and groups of young animals, often rest and graze together in small groups called crashes, usually of up to about 14 animals. Adult bulls are mostly solitary.

Dominant bulls hold territories. They mark the borders with urine spraying, by scraping the ground with their feet and wiping their horns on bushes, and by building dung piles called middens, which other rhinos sniff to learn who has passed. Subordinate bulls may live inside a dominant bull’s territory as long as they do not challenge him. The most serious fights are between territorial bulls competing for a cow in season.

White rhinos communicate with a range of sounds: panting contact calls, snorts and grunts, squeals of distress and deep bellows when threatened. Their eyesight is poor, so they rely mainly on smell and hearing. They are generally calm and less aggressive than black rhinos, but any rhino may charge if surprised or if a calf is threatened.

Reproduction and life cycle

Cows usually mature at 6–7 years and bulls at 10–12 years, although young bulls rarely get the chance to breed until they win a territory. Courtship can last days, and the pair may stay together for 5–20 days.

Pregnancy lasts about 16 months, one of the longest of any land mammal. A single calf is born weighing about 40–65 kg (88–143 lb). It is unsteady for the first two or three days, starts to nibble grass within a couple of months, and keeps suckling for a year or more. A white rhino calf typically walks or runs in front of its mother, while she guides it from behind; a black rhino calf usually follows behind its mother.

Cows give birth every 2–3 years and chase off their older calf shortly before the new one arrives.

Lifespan

White rhinos can live about 40–50 years. Adults have almost no natural predators, so in a well-protected reserve most deaths come from old age, drought, disease or fights between bulls. Lions and spotted hyenas occasionally take young calves, and there are rare records of lions killing a sick or weakened adult.

Threats: hunting, then poaching for horn

In the 19th century, uncontrolled hunting by European settlers almost wiped out the southern white rhino. By the end of the 1800s it was thought to be extinct, until a tiny population, often estimated at fewer than 100 animals, was found in what is now Hluhluwe-iMfolozi Park in KwaZulu-Natal, South Africa.

Today the main threat is poaching for horn. Rhino horn is sold illegally for traditional medicine and as a luxury status item, mainly in Vietnam and China, even though it is only keratin and has no proven medical value. Poaching across Africa surged from 2008 and peaked in 2015, when more than 1,300 rhinos were killed. White rhinos are especially easy targets because they are large, live in open country, gather in groups and are relatively calm. Kruger National Park, once the largest stronghold, lost about 60% of its white rhinos between 2013 and 2021. Drought and the high cost of protection are added pressures. Read more in what are rhino horns made of.

Conservation status: Near Threatened

The IUCN Red List classifies the white rhino as Near Threatened (2020 assessment). The northern subspecies on its own is Critically Endangered and considered possibly extinct in the wild.

The southern white rhino is one of conservation’s great success stories. Strict protection in Natal, followed by the Natal Parks Board’s “Operation Rhino” in the 1960s, which moved rhinos to new reserves and zoos, built the population back to more than 20,000 by the early 2010s. Poaching has since pushed numbers down again. According to the IUCN African Rhino Specialist Group and TRAFFIC, there were about 15,750 white rhinos at the end of 2024, an 11% drop from the year before, with most of the losses in South Africa. They are still the most numerous rhino by far, but they are declining. For all five species, see how many rhinos are left.

Protection today combines armed rangers, tracking dogs, intelligence work against smuggling networks, community programs and dehorning, in which vets remove most of the horn from a sedated rhino so it is worth less to poachers. In 2023 the nonprofit African Parks took over the world’s largest captive rhino breeding operation, with about 2,000 southern white rhinos, and began moving them to protected areas across Africa over a 10-year program.

Myths and facts

Myth: white rhinos are white. Both African rhinos are gray. The popular story that “white” comes from a Dutch or Afrikaans word meaning “wide” is not supported by historical records; the true origin of the name is unknown. See why is it called a white rhino.

Myth: rhino horn cures disease. Horn is keratin, like hair and nails. There is no reliable evidence that it treats fever, cancer or anything else.

Fact: the white rhino is not the most aggressive rhino. That reputation belongs to the black rhino. White rhinos usually move away from people, although they should always be watched from a safe distance and from a vehicle where rules require it.

White rhinos and people

White rhinos are among the most popular animals on African safaris, and they are kept in zoos and safari parks across Europe and North America. All white rhinos in zoos are southern white rhinos. Zoos have also helped with research on breeding, including the assisted reproduction work that hopes to rescue the northern white rhino. To compare the two African species, read white rhino vs black rhino.