Photos:

Alligators vs. Crocodiles: Photos Reveal Who's Who

PREVIOUS | NEXT
1 of 17

Alligator or Crocodile?

Credit: U.S. Fish and Wildlife Service
The two reptiles are close relatives. But crocodiles tend to live in saltwater habitats, while alligators hang out in freshwater marshes and lakes. This smiley creature is an alligator.
More from LiveScience