Animals

Grown-ups

🐊 Black caiman vs Polar bear 🐻‍❄️

The black caiman is about 4 times as long as the polar bear.

Getting the animals ready…

🧒 our measuring child, 4 ft1.2 m🐊 Black caiman, 20 ft6 m long🐻‍❄️ Polar bear, 5 ft1.5 m at the shoulder
Row🐊 Black caiman🐻‍❄️ Polar bear
Size The black caiman is about 4 times as long as the polar bear.20 ft6 m14.9 ft1.5 m2
Top speed Neither has a checked number yet.no checked number yetno checked number yet
Weight We don't have a checked number for the black caiman yet.no checked number yet399 to 1,450 lb181 to 658 kg2
Lives The polar bear usually lives about twice as long as the black caiman.13 years13 years125 years25 years2
Eats Both eat meat.fish such as piranhas and catfish, other animals near the water, and insects when it is youngmostly seals, caught at holes in the sea ice
Lives in They live in different kinds of places, so they would hardly ever meet.slow rivers, lakes and flooded forest in the Amazon regionthe Arctic, on the sea ice around the North Pole

Which one? Black caiman or polar bear

🎂 Lives
🐊 Black caiman13 years13 years1
🐻‍❄️ Polar bear25 years25 years2

🏁 Who would win the race?

We don't have a checked top speed for the black caiman or the polar bear yet, so there is no race.

We only race. Real animals mostly avoid each other. A race is the only fair contest: who reaches the tree first, by top speed. Our face-off books compare real numbers, and nobody gets hurt.

9 things to know about Black caiman vs Polar bear

  1. The black caiman: A very big reptile of the Amazon that lives in slow rivers.
  2. The polar bear: The biggest bear, at home on the frozen Arctic sea ice.
  3. They are different kinds of animal. The black caiman is a reptile, so it has scaly skin; the polar bear is a mammal, so it breathes air with lungs and feeds its babies milk.
  4. The black caiman is about 4 times as long as the polar bear: 1 against 2.
  5. The polar bear usually lives about twice as long as the black caiman. Usual lifespans: 1 for the black caiman and 2 for the polar bear.
  6. Both eat meat. The black caiman eats fish such as piranhas and catfish, other animals near the water, and insects when it is young; the polar bear eats mostly seals, caught at holes in the sea ice.
  7. The black caiman lives in slow rivers, lakes and flooded forest in the Amazon region. The polar bear lives in the Arctic, on the sea ice around the North Pole. They live in different kinds of places, so they would hardly ever meet.
  8. The black caiman: doing fine (Least Concern on the IUCN Red List). 3
  9. The polar bear: needs help (Vulnerable on the IUCN Red List). 4

Wow facts

🐊 Black caiman

  • A black caiman can grow longer than most cars.
  • Young ones eat mostly insects.
  • It lives in slow rivers and flooded Amazon forest.

🐻‍❄️ Polar bear

  • Under its white-looking fur, a polar bear's skin is black.
  • Each hair is clear and hollow, not white.
  • Its huge paws work like paddles and snowshoes.

Questions kids ask about Black caiman and Polar bear

Which is bigger, black caiman or polar bear?

The black caiman is about 4 times as long as the polar bear: 1 against 2.

Which is heavier, black caiman or polar bear?

We only have a checked weight for the polar bear: 2. Scientists are still working out the other.

Which lives longer, black caiman or polar bear?

The polar bear usually lives about twice as long as the black caiman. Usual lifespans: 1 for the black caiman and 2 for the polar bear.

What do black caiman and polar bear eat?

Both eat meat. The black caiman eats fish such as piranhas and catfish, other animals near the water, and insects when it is young; the polar bear eats mostly seals, caught at holes in the sea ice.

Where do black caiman and polar bear live?

The black caiman lives in slow rivers, lakes and flooded forest in the Amazon region. The polar bear lives in the Arctic, on the sea ice around the North Pole. They live in different kinds of places, so they would hardly ever meet.

Who would win, black caiman or polar bear?

We never show fights, because a fight is not a fair way to compare animals. They live in different kinds of places, so they would hardly ever meet. What we can compare is how big, how heavy, how fast, how long they live and what they eat, as above.

📤 Share this pair

The link carries only the two animals’ names: peabody.kids/animals/compare/black-caiman-vs-polar-bear

Where these numbers come from

  1. University of Michigan Museum of Zoology, Animal Diversity Web: Melanosuchus niger (black caiman), checked 10 November 2026.
  2. National Park Service, checked 30 October 2026.
  3. Wikidata, from the IUCN Red List, checked 10 November 2026.
  4. Wikidata, from the IUCN Red List, checked 30 October 2026.

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