Interactive Africa

African river

Hippopotamus

Hippopotamus amphibius

A huge, barrel-shaped animal that spends the day in the water with only its eyes, ears and nostrils showing.

Size
Up to 4m long, and as heavy as a small lorry
Look for it
All year round
Where
Rivers, lakes and swamps south of the Sahara

My spotter's list

Wades after you, and sinks until only its eyes, ears and nostrils show. Move your pointer and see.

When to look

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Hippo

Good to know

Six things about the hippo

Water

A day in the water

Hippos stay in the water all day to keep cool and stop their skin drying out, and come out at night to graze.

Swimming

It cannot really swim

A hippo is too heavy to float. It walks or bounces along the bottom, and can hold its breath for about five minutes.

Skin

Its own sunscreen

Hippo skin oozes a reddish oil that works as sunscreen and helps to keep wounds clean. People once thought it was blood.

Mouth

A huge yawn

A hippo can open its mouth almost 150 degrees. The yawn is a warning, showing teeth that can be half a metre long.

Danger

Not as gentle as it looks

Hippos are among the most dangerous large animals in Africa, and can run faster than a person over a short distance.

Family

A surprising cousin

The hippo's closest living relatives are whales and dolphins.

The real thing

Photos of the hippo

Hippopotamus, photo 1
Photo: Diego Delso, CC BY-SA 4.0, Wikimedia Commons
Hippopotamus, photo 2
Photo: Diego Delso, CC BY-SA 4.0, Wikimedia Commons
Hippopotamus, photo 3
Photo: Diego Delso, CC BY-SA 4.0, Wikimedia Commons

Photos are from Wikimedia Commons, used under the free licences shown. They have been resized, and cropped where they appear in link previews.

Out and about

How to spot one

Look for a row of rounded backs, or just ears and nostrils, in a deep pool by day. At dusk they climb out along well-worn paths to graze.

Lend a hand

How to help

Hippos need rivers that keep flowing and grassland beside them. Support wetland conservation, and never buy hippo-ivory carvings.

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