Hippos in South Africa: Africa's Most Dangerous Animal

The hippo is one of those animals that people consistently underestimate. It sits in the river, barely moving, half submerged, eyes just above the waterline, and at first glance it looks almost comical. Rotund, slow, vaguely prehistoric. And then your guide tells you it is the most dangerous animal in Africa, responsible for more human deaths on the continent than any other large mammal, and you look at it slightly differently.

Not what you expect

The common hippopotamus is the third largest land animal on earth, after the elephant and the white rhino. Adult males can weigh over 3000 kilograms and reach lengths of five metres. They are capable of running at up to 30 kilometres per hour over short distances, faster than most people can sprint, and their jaws can open to nearly 180 degrees, delivering a bite force that is among the most powerful of any land animal. None of this is obvious when you are watching a pod of hippos dozing on a sandbank. That is rather the point.

A life lived in water

Hippos spend the vast majority of their daylight hours in water. This is not laziness. Their skin is extremely sensitive to the sun and dries out quickly, so they use rivers, lakes, and waterholes as a form of temperature regulation and sun protection. Their skin secretes a reddish oily substance that acts as both a natural sunscreen and an antimicrobial agent. It is sometimes called blood sweat, though it is neither blood nor sweat. It is one of nature's more elegant solutions to a difficult problem.

At night, hippos leave the water to graze on grass, sometimes travelling several kilometres from their river in a single night. They are almost entirely herbivorous, consuming up to 40 kilograms of grass in an evening. By dawn they are back in the water, settling into the familiar groups known as pods, bloats, or schools, depending on who you ask.

The sounds of the river

If you have spent a night in a tented camp beside a river in the African bush, you already know about hippo sounds. The grunting, bellowing, honking chorus that erupts from the water after dark is one of the most distinctive soundscapes in Africa. Up close it is extraordinarily loud. Males use these vocalisations to establish dominance and advertise their territories, and the exchanges between rival males can go on for hours.

Underwater, hippos communicate through a combination of sounds and vibrations that travel through both air and water simultaneously, allowing them to be heard by other hippos both above and below the surface. It is a communication system that is still not fully understood by scientists.

Why they are dangerous

Hippos are highly territorial in water and deeply unpredictable on land. A hippo that feels threatened, cornered, or cut off from its river will charge without hesitation. They are not predatory animals, but their size, speed, and aggression make them extraordinarily dangerous when provoked. Fishermen and small boat users on African rivers encounter hippos regularly, and the consequences of getting too close can be severe.

On a well-guided safari, of course, you observe hippos safely from a vehicle or a raised riverbank, and your ranger will always position you at a respectful distance. The danger is real, but it is also part of what makes the hippo such a compelling animal to understand.

Where to find hippos in South Africa

The rivers of the Greater Kruger region are among the best places in South Africa to see hippos in the wild. The Sabie, Olifants, and Luvuvhu rivers all support healthy hippo populations, and sightings on a morning or afternoon game drive along the riverbanks are common. Some of the most dramatic viewpoints in Kruger, including the cliff-top camps above the Olifants River, look directly down onto pods of hippos and crocodiles sharing the water below.

Seeing hippos with Savanna Stalkers

The hippo is an animal that rewards time and attention. The more you watch them, the more you notice: the social dynamics within the pod, the way younger animals are kept in check by dominant males, the moments of surprising tenderness between a mother and her calf. Our guides know where to find them and how to read their behaviour, and they will make sure you leave with a very different impression of this animal than the one you arrived with.

Get in touch with the Savanna Stalkers team to start planning your safari. Also read our complete guide to tracking the Big Five, discover our guide to Nile crocodiles in South Africa, and find out the best time to visit Kruger National Park.