I used to think that crocodiles were found in the Eastern Hemisphere and alligators live in the Western Hemisphere, but that’s totally not right -you hear about both of them all over the world. If you’ve found the two reptiles to be hard to distinguish from each other, this handy guide from John Atkinson at Wrong Hands should clear things up. The Crocodile faces to the right, and the alligator faces to the left. Easy peasy! -via Laughing Squid
When their mouths are closed, upward-pointing teeth are still exposed. Alligator lower jaw teeth are entirely enclosed when the mouth is closed.
Quelle est la différence entre un crocodile et un alligator?
C'est caïman pareil! :)