Hippo vs Crocodile for Kids
Hippos and crocodiles often share African rivers, lakes, and wetlands, but they are very different animals. Hippos are warm-blooded mammals that graze mainly on land and rest socially in water. Crocodiles are cold-blooded reptiles with armored skin, long tails, and ambush-hunting bodies built for swimming.
Hippo
- Type: Mammal
- Group: Even-Toed Ungulate
- Known for: Huge mouth, barrel-shaped body, river life, grazing, and powerful jaws
- Diet: Herbivore
- Special skill: Closing its nostrils and ears, holding its breath, and bounding along riverbeds
Crocodile
- Type: Reptile
- Group: Crocodilian
- Known for: Armored skin, powerful jaws, aquatic ambushes, and strong swimming
- Diet: Carnivore
- Special skill: Hiding almost completely underwater and striking with powerful jaws and a muscular tail
Quick Answer
Quick answer: A hippo is a huge plant-eating mammal with smooth skin, four-toed feet, and a baby called a calf. A crocodile is an armored carnivorous reptile with scales, a powerful tail, and a baby called a hatchling. Hippos graze on land, while crocodiles hunt mainly in or beside water.
Hippo vs Crocodile: Quick Comparison
| Feature | Hippo | Crocodile |
|---|---|---|
| Animal type | Mammal | Reptile |
| Animal group | Even-toed ungulate | Crocodilian |
| Known for | Huge mouth, river life, grazing, and powerful jaws | Armored skin, ambush hunting, jaws, and swimming |
| Main habitat | Rivers, lakes, wetlands, and nearby grasslands | Rivers, lakes, wetlands, estuaries, and coasts |
| Where found | Africa | Africa, Asia, Australia, and the Americas |
| Diet | Mainly herbivore | Carnivore |
| Baby name | Calf | Hatchling |
| Body covering | Thick, nearly hairless skin | Scales and bony armor plates |
| Movement in water | Walks or bounds along the bottom and surfaces to breathe | Swims with powerful side-to-side tail strokes |
| Special skill | Breath holding and riverbed movement | Camouflaged aquatic ambushes |
How Are Hippos and Crocodiles Alike?
- Both hippos and crocodiles are large backboned animals that spend much of their time near water.
- Both have powerful jaws, strong senses, and eyes and nostrils positioned high on the head.
- Both can stay mostly submerged while watching what happens above the surface.
- Both lay or raise their young near water and may protect them from danger.
- Both are fast, powerful wild animals that should always be watched from a safe distance.
How Are Hippos and Crocodiles Different?
- Hippos are mammals, while crocodiles are reptiles.
- Hippos mainly eat grass, while crocodiles eat fish and other animals.
- Hippos give birth to calves and feed them milk, while crocodiles lay eggs that hatch into hatchlings.
- Hippos have thick skin with very little hair, while crocodiles have scales and bony armor plates.
- Hippos usually move underwater by walking or bounding along the bottom, while crocodiles swim with powerful tail strokes.
Hippo vs Crocodile Showdown
River-animal showdown: The hippo wins for size, social life, and our weirdest-fact prize because it can sleep underwater and rise to breathe without fully waking. The crocodile takes swimming, water speed, and stealth with its streamlined body, high-set eyes, and muscular tail. Strength is a tie because both animals are immensely powerful in completely different ways.
Fun Hippo vs Crocodile Facts
Mammal vs Reptile
A hippo is a warm-blooded mammal that gives birth to live calves and feeds them milk. A crocodile is an ectothermic reptile that lays eggs and has scaly skin strengthened by bony plates called osteoderms.
Grass Grazer vs Ambush Hunter
Hippos usually leave the water after sunset and graze on grasses for several hours. Crocodiles are carnivores that wait quietly in water or near shore before seizing fish and other prey.
Riverbed Walker vs Tail-Powered Swimmer
Hippos are denser than water and commonly move by walking, running, or bounding along the riverbed. Crocodiles swim by sweeping their tall muscular tails from side to side while holding their legs close to the body.
Both Keep Their Eyes Above Water
A hippo has eyes, ears, and nostrils high on its head, letting most of the body remain underwater. A crocodile has similarly raised eyes and nostrils, helping it see and breathe while staying difficult to spot.
Hippos Can Sleep Underwater
A resting hippo may remain submerged and automatically rise to the surface for air without fully waking. Its nostrils close underwater, and adults can hold their breath for several minutes.
Hippo vs Crocodile Quiz
- Which animal is a mammal? Answer: Hippo.
- Which animal lays eggs? Answer: Crocodile.
- Which animal mainly eats grass? Answer: Hippo.
- Which animal swims using a powerful tail? Answer: Crocodile.
- What are their babies called? Answer: A hippo baby is a calf, and a crocodile baby is a hatchling.
Hippo vs Crocodile FAQ
What is the main difference between a hippo and a crocodile?
A hippo is a huge plant-eating mammal that gives birth to calves. A crocodile is an armored carnivorous reptile that lays eggs.
Which is bigger, a hippo or a crocodile?
Adult hippos are generally much heavier than even the largest crocodiles, although the longest crocodiles can be longer from snout to tail.
Can hippos swim?
Hippos are highly adapted to water, but they usually move by walking, running, or bounding along the bottom rather than using regular swimming strokes.
Do hippos and crocodiles live together?
Yes. In parts of Africa they share rivers, lakes, and wetlands, although each uses the habitat differently.
Should kids approach a hippo or crocodile?
No. Both are extremely powerful wild animals. Kids should stay far away, remain with responsible adults, and follow instructions from wildlife guides or park staff.
Animal Words to Know
- Ungulate: A hoofed mammal; hippos belong to the even-toed ungulate group.
- Crocodilian: A reptile group containing crocodiles, alligators, caimans, and gharials.
- Osteoderm: A bony plate embedded within the skin of an animal such as a crocodile.
- Ectothermic: Relying largely on outside warmth to regulate body temperature.
- Ambush: Waiting hidden before making a sudden attack.
Hippo and Crocodile River Activity
Hippo and Crocodile River Activity
Draw a hippo and crocodile sharing the same African river. Give the hippo rounded ears, high nostrils, four-toed feet, and a calf. Give the crocodile armored scales, a long snout, a muscular tail, eggs, and hatchlings. Add arrows showing the hippo bounding along the bottom and the crocodile swimming with its tail.
Meet Each Animal
Want the full fact file? Here are quick highlights from each animal’s own facts page.
Hippo Fact Highlight
From the full animal facts pageCrocodile Fact Highlight
From the full animal facts pageMore Animal Comparisons
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