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Crocodile or Alligator - What’s the Difference?

4. Summary

This table shows you the most important differences between crocodile and alligator at a glance.


  • Size: 11-15 feet (3.4 to 4.6 m) (males)
  • Weight: 790-990 pounds (360-450 kg) (males)
  • Head: broad
  • Snout: U-shaped, broad
  • Teeth: 4th teeth in lower jaw not visible
  • Life expectancy: 30-65 years
  • Behavior: rather calm, spend a lot of time on land
  • Locomotion: can run far
  • Habitat: Freshwater
  • Distribution: USA and China only


  • Size: 11-20 feet (3.5 to 6 m) (males)
  • Weight: 880-2200 pounds (400-1,000 kg) (males)
  • Head: narrow
  • Snout: V-shaped, narrow
  • Teeth: 4th teeth in lower jaw visible
  • Life expectancy: 70-100 years
  • Behavior: more active, spending more time in the water
  • Locomotion: can't run long
  • Habitat: Freshwater, brackish water
  • Distribution: Africa, Asia, Australia, America

Alligator Alligator - Photo: Svetlana Foote/Shutterstock


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