What's the Difference Between an Alligator and a Crocodile?

Alligator:

• The main visible difference between the two is that alligators have a wide, broad snout while crocodiles have a narrow, pointy snout and jaw.
• Crocodiles often have teeth the jut out noticeably from their lower jaw - the alligator does not.
  
• In general, alligators prefer fresh water while crocs enjoy a salty abode.
  

Crocodile:

Video: Difference Between Alligator and Crocodile