What is the mouth difference about alligators and crocodiles?

Answer 1

Alligator's have wider jaws/noses then Crocodiles and the Alligator's upper jaw overlaps the lower so on an Alligator you can't see the lower teeth when their mouths are shut, the crocodile you can see all the teeth when the mouth is shut

A good illustration: http://crocodilian.com/cnhc/cbd-faq-q1.htm

Answer 2

An alligators teeth point down (fang like) toward the front of the mouth (snout) and almost all species of crocodiles point up in the same location - an easy way to tell the difference.

Answer 3

The difference in the jaws of the alligator and the crocodile is that the alligator only shows the upper teeth in the jaw. while the crocodile shows both upper and lower set of teeth.

Answer 4

Alligators tend to have round snouts, while crocodiles have a more pointed jaw shape.

Answer 5

Same