Animals

Grown-ups

🐊 American alligator vs Tiger shark 🦈

The tiger shark is a bit bigger than the American alligator. They are about the same.

Getting the animals ready…

🧒 our measuring child, 4 ft1.2 m🐊 American alligator, 8 to 11 ft2.4 to 3.4 m long🦈 Tiger shark, 11 to 14 ft3.3 to 4.3 m long▬ the bar shows the range the sources give; the drawing stands in the middle
Row🐊 American alligator🦈 Tiger shark
Size The tiger shark is a bit bigger than the American alligator.8 to 11 ft2.4 to 3.4 m111 to 14 ft3.3 to 4.3 m2
Top speed Neither has a checked number yet.no checked number yetno checked number yet
Weight They are about the same.1,000 lb454 kg3849 to 1,400 lb385 to 635 kg2
Lives The American alligator usually lives about twice as long as the tiger shark.50 years50 years127 years27 years2
Eats Both eat meat.fish, turtles, frogs, snakes and birdssea turtles, birds, snakes, crabs, shellfish and dugongs
Lives in They live in different kinds of places, so they would hardly ever meet.swamps, marshes, rivers and lakes of the southeastern United Stateswarm salt water, from shallow reefs to deep water

Which one? American alligator or tiger shark

📏 Length
🐊 American alligator8 to 11 ft2.4 to 3.4 m1
🦈 Tiger shark11 to 14 ft3.3 to 4.3 m2
⚖️ Weight
🐊 American alligator1,000 lb454 kg3
🦈 Tiger shark849 to 1,400 lb385 to 635 kg2
🎂 Lives
🐊 American alligator50 years50 years1
🦈 Tiger shark27 years27 years2

🏁 Who would win the race?

We don't have a checked top speed for the American alligator or the tiger shark 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.

10 things to know about American alligator vs Tiger shark

  1. The American alligator: It digs pools in the swamp that help other animals in dry weather.
  2. The tiger shark: A big striped shark that eats many kinds of sea animals.
  3. They are different kinds of animal. The American alligator is a reptile, so it has scaly skin; the tiger shark is a fish, so it breathes with gills.
  4. The tiger shark is a bit bigger than the American alligator: 2 against 1.
  5. They are about the same. That is 3 for the American alligator and 2 for the tiger shark.
  6. The American alligator usually lives about twice as long as the tiger shark. Usual lifespans: 1 for the American alligator and 2 for the tiger shark.
  7. Both eat meat. The American alligator eats fish, turtles, frogs, snakes and birds; the tiger shark eats sea turtles, birds, snakes, crabs, shellfish and dugongs.
  8. The American alligator lives in swamps, marshes, rivers and lakes of the southeastern United States. The tiger shark lives in warm salt water, from shallow reefs to deep water. They live in different kinds of places, so they would hardly ever meet.
  9. The American alligator: doing fine (Least Concern on the IUCN Red List). 4
  10. The tiger shark: doing fine, for now (Near Threatened on the IUCN Red List). 5

Wow facts

🐊 American alligator

  • Baby alligators chirp from inside their eggs.
  • The warmth of the nest decides if hatchlings are males or females.
  • An alligator's snout is wide and rounded, like a U.

🦈 Tiger shark

  • A tiger shark eats many kinds of sea animals.
  • It lives from shallow reefs to deep water.
  • It moves slowly and quietly.

Questions kids ask about American alligator and Tiger shark

Which is bigger, American alligator or tiger shark?

The tiger shark is a bit bigger than the American alligator: 2 against 1.

Which is heavier, American alligator or tiger shark?

They are about the same. That is 3 for the American alligator and 2 for the tiger shark.

Which lives longer, American alligator or tiger shark?

The American alligator usually lives about twice as long as the tiger shark. Usual lifespans: 1 for the American alligator and 2 for the tiger shark.

What do American alligator and tiger shark eat?

Both eat meat. The American alligator eats fish, turtles, frogs, snakes and birds; the tiger shark eats sea turtles, birds, snakes, crabs, shellfish and dugongs.

Where do American alligator and tiger shark live?

The American alligator lives in swamps, marshes, rivers and lakes of the southeastern United States. The tiger shark lives in warm salt water, from shallow reefs to deep water. They live in different kinds of places, so they would hardly ever meet.

Who would win, American alligator or tiger shark?

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/american-alligator-vs-tiger-shark

Where these numbers come from

  1. National Park Service, Gulf Islands, checked 30 October 2026.
  2. University of Michigan Museum of Zoology, Animal Diversity Web: Galeocerdo cuvier (tiger shark), checked 10 November 2026.
  3. Smithsonian's National Zoo, checked 30 October 2026.
  4. Wikidata, from the IUCN Red List, checked 30 October 2026.
  5. Wikidata, from the IUCN Red List, checked 10 November 2026.

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