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Alligator

An alligator is a large crocodilian reptile in the genus Alligator, related to crocodiles and caimans.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

An alligator is a large crocodilian reptile in the genus Alligator, related to crocodiles and caimans. Living alligators include the American alligator and the Chinese alligator, both of which are semi-aquatic and inhabit freshwater wetlands. The American alligator is a conservation success story, while the Chinese alligator remains very rare in the wild.

Classification and species

Alligators are reptiles in the order Crocodilia and the family Alligatoridae. The genus includes two living species: the American alligator and the Chinese alligator.

Physical characteristics

Alligators are large, armored reptiles with short legs, strong tails, and broad, rounded snouts. Their bodies are adapted for swimming and for remaining partly submerged while watching for prey.

Habitat and distribution

Alligators are associated with freshwater environments, especially wetlands, swamps, marshes, lakes, and slow-moving rivers. The American alligator lives in the southeastern United States, while the Chinese alligator is native to eastern China.

Diet and behaviour

Alligators are carnivores that feed on fish, birds, mammals, and other animals. They are semi-aquatic predators that use stealth and powerful jaws to capture prey.

Conservation

The American alligator was once threatened by habitat loss and hunting but has recovered under protection. The Chinese alligator remains rare and is one of the world’s most endangered crocodilians.

Key facts

  • Alligators are crocodilians in the genus Alligator, within the family Alligatoridae.
  • Two living species are recognized: the American alligator and the Chinese alligator.
  • Alligators have broad, rounded snouts and are adapted to semi-aquatic life.
  • The American alligator recovered strongly after near-extinction and is now a conservation success story.
  • The Chinese alligator is much rarer and is considered critically endangered.
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Canadian context

Alligators are not native to Canada, but they are familiar to Canadian readers through wildlife, conservation, and zoology coverage. Canadian zoos and education programs may also feature alligators as part of reptile conservation and public awareness.

Frequently asked questions

What is an alligator?
An alligator is a large crocodilian reptile in the genus Alligator, related to crocodiles and caimans.
How many species of alligator are there?
There are two living species: the American alligator and the Chinese alligator.
Where do alligators live?
Alligators live mainly in freshwater wetlands, including swamps, marshes, lakes, and rivers.
What do alligators eat?
Alligators are carnivores that eat fish, birds, mammals, and other animals.
How are alligators different from crocodiles?
Alligators generally have broader, rounded snouts, while crocodiles usually have narrower, more pointed snouts.
Are alligators endangered?
The American alligator is no longer endangered in most of its range, but the Chinese alligator is critically endangered.

References

  1. Smithsonian's National Zoohttps://nationalzoo.si.edu/animals/american-alligator
    Supports: American alligator description, conservation recovery, and status.
  2. Encyclopaedia Britannicahttps://www.britannica.com/animal/alligator
    Supports: Genus Alligator classification and relationship to other crocodilians.
  3. Britannica Kidshttps://kids.britannica.com/kids/article/alligator/352737
    Supports: Species count, habitats, physical traits, diet, and basic biology.
  4. WorldAtlashttps://www.worldatlas.com/animals/alligator.html
    Supports: Species distribution, conservation notes, and ecological role.
  5. World Animal Protectionhttps://www.worldanimalprotection.us/latest/blogs/10-facts-about-american-alligators/
    Supports: American alligator range in the southeastern United States.