Fascinating Facts About Hungry Hungry Hippos in the Wild

Say hello to the hungry, hungry hippo — the most dangerous land animal in the world.

The hippopotamus is an anomaly in that it looks adorable and, therefore, friendly. However, this cuteness is a little deceiving — the hippo is actually the most dangerous land animal in the world.

You may think they lazily spend their days enjoying waterways and munching on grass — and, sure, there’s a reason they’ve been called “hungry, hungry hippos.” But there is so much more to this fascinating creature than you can imagine.

Hippos in the Modern Era

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There are two species of hippos living today — the common hippo and the smaller pygmy hippo.

Both species live on the continent of Africa. However, at one time, there were other species in Europe, India, Indonesia, Madagascar and Israel. Why they went extinct is largely unclear.

The adorable pygmy hippo looks like a mini version of the common hippo, but it is rarer, and its behaviors are more of a mystery. It spends time in water like its larger cousin but is far less aquatic overall.

The pygmy is found in parts of Sierra Leone, Guinea and the Ivory Coast but is generally located in Liberia. This shy, nocturnal creature was unknown to scientists until about 1840, and because it doesn’t seek the spotlight, there’s still a lot we don’t know about it.

The Hippos’ Current Home

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Common hippos reside in the eastern central region of Africa and below the Sahara Desert.

Hippos can be found in Uganda, Kenya, Sudan, Rwanda, Botswana, Senegal, Gambia, Chad, Zambia, Togo, Tanzania, Mozambique, Ghana, the Republic of Congo and South Africa.

…And the Habitat Where They Roam

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The common hippo lives in habitats with grass and water bodies around lakes, rivers and mangrove swamps.

They love water but don’t like bodies that are too deep or shallow. If the water is deep enough to reach its head, the hippo is a very happy camper.

Long-Gone European Hippos

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Believe it or not, hippos once roamed Europe. The European hippo evolved about a million years ago and disappeared before the last Ice Age. Hippopotamus gorgops, the largest of the extinct hippos, also vanished around the same time.

The giant European hippo roamed the farthest north out of all the European hippo species, even living in what is now Britain before it went extinct.

An Imposing Presence

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Hippos are among the world’s largest land mammals — they are right behind elephants and white rhinos in size.

Bulls (adult males) tip the scales between 3,300 and 7,050 pounds, continuing to grow all their lives. Females stop growing at about 25 and weigh a few hundred pounds. They are approximately 5-feet tall and 10- to 16-feet long, which makes them about the size of a car.

A hippo’s canine teeth are like tusks and are used for fighting. Males “lock” them together in battle. These teeth, which can grow to be more than 1.5-feet long, contain ivory, which is softer than what you would find from elephant tusks.

A Feast Fit for a Hippo

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After spending the day at or in the water, hippos come out at sundown to feast on grasses and nutrient-rich fruits, shoots and reeds.

They do occasionally feast on the odd aquatic plant.

A Hippo Yawn Isn’t Just About Being Sleepy

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A yawning hippo doesn’t always mean they’re about to nap. Think of a hippo yawn as a warning for you to steer clear.

Hippos also make a deep laughing sound, which is another sign you’re invading their territory.

So, Will a Hippo Eat a Human?

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Hippos are one of the most dangerous land mammals in the world. This highly territorial animal will attack anything or anyone getting too close for comfort, particularly when calves are present.

They can (and will) charge and crush a human or drown them by overturning their boat. Trust us: You don’t want to get bit — their sharp teeth and tusks have taken down buffalo, impala and kudu.

While hippos kill about 500 people each year, they do not eat them. Hippos are herbivores; their digestive systems do not break down meat well.

While they don’t have a particular beef with humans, they are wild animals, which makes them unpredictable. They often see humans as intruders and go on the defense.

A Bull Leads the Charge

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A group of hippos is a “float.” It can also be referred to as a ‘herd,” “school,” “pod,” “dale” or “bloat.” Ten to 30 hippos live in a float at one time. However, some have up to 200 members!

No matter how small or large a float, a hippo herd is always led by a single, dominant bull.

Bachelor hippos looking for a new home are usually allowed inside a community, but they must respect the bull by not flirting with his ladies.

They Can’t Swim — So, How Do They Get Around in Water?

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Hippos are always in water, but they can’t really swim. In fact, they can’t even float. They sink to the bottom and walk, trot, jog or run at speeds of up to 15 mph.

To return to the top, they push themselves from the bottom with their hind legs and propel themselves up.

Check Out This Hippo Walking Under Water

The Hippo’s Powerful Lungs

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Adult hippos can hold their breath underwater for up to five minutes at a time and will resurface every three to five minutes for air. Younger hippos can do this for up to three minutes.

This is an automatic action — they can even do it in their sleep.

The Sleep Science of Hippos

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Hippos are nocturnal and spend their nights looking for food. During the day, they sleep in short bursts.

When they sleep in deep water, they resurface without waking. In shallow water, they bring their nostrils just above the surface.

Blood Sweat: Natural Sunscreen

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Hippos secrete a red, oily substance that some have nicknamed “blood sweat.” It’s neither blood or sweat. It’s more of a natural sunscreen and is made up of two secretions — a red one (hipposudoric acid) and orange one (norhipposudoric acid).

These compounds are highly acidic. They inhibit bacteria and absorb ultraviolet light.

Their Need for Speed

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Sure, they may look lazy and sluggish, but hippos can really move. They run between 19 and 25 mph for a few hundred yards at a time.

This means they can easily outrun you, so you should find cover immediately if you come across one. If you must run, do so in a zig-zag line because their mass makes it harder for them to change direction so easily.

We’re Not Joking About How Fast They Can Run

Big Noise From a Big Animal

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Hippos are LOUD. In fact, they’re one of the loudest species on the African continent. The San Diego Zoo states that their vocalizations can go up to 115 decibels. They make all sorts of noises — grunting, grumbling, roaring, honking and wheezing are just part of their repertoire.

To get an idea of how loud they can be, think about a time you were too close to the speakers at a concert.

Or Just Listen to This

A Watery Birth

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Hippos have their babies in shallow water, as it’s the safest place for them to give birth.

Once they’re born, babies will stay in the water with their moms for several days until they gain enough strength to venture onto land. If the water is too deep, they’ll rest on their mama’s back.

The Mating Season

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Hippos don’t mate every year. After pregnancy (which lasts for about eight months), females don’t ovulate again for at least 17 months.

Hippos reach sexual maturity when they are between 7 and 8 years old. Mating season typically happens towards the end of monsoon season.

Hippos can birth twins, but this is rare — they usually have one calf at a time.

Say Hello to Hippo Babies

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A hippo baby weighs between 50 and 110 pounds and can hold its breath underwater for about 40 seconds.

When a baby dives, it is capable of closing its nose and ears to block out water. A hippo mom will sometimes hold her baby in her mouth while in the water.

A Gross Territorial Marker

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If you’ve ever heard that hippos are “poo sprinkers,” you may be surprised to find that it’s true.

Hippos spray their poop by rotating their tail. This nasty habit is all about showing dominance — males do it to impress females and also mark their territory.

A Fishy Relationship

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Hippos use fish as toothpicks. They visit areas where schools of fish live, open their mouths and let the fish pick at their teeth, gums and tongue to eat their leftovers and clean them of parasites.

This allows the hippo to avoid infection, and it feeds the fish at the same time.

Pablo Escobar’s Cocaine Hippos

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Hippos are invasive species in Colombia thanks to drug lord Pablo Escobar, whose pet hippos roamed his property in the 1970s. After his death, Colombian authorities left the hippos to their own devices, and they kept breeding.

There were initially four hippos on his property, and that number has since swelled to almost 200. Scientists believe those numbers will increase to about 700 over the next decade, which will change the local ecosystem.

The Colombian government wanted to cull the animals but stopped after public outcry. They tried to sterilize them, but that proposition is too difficult and expensive. There is no solution that yet exists for this issue.