To distinguish between a crocodile and alligator, their body parts are most obvious difference is in the mouth and teeth. Alligator mouth wider than the mouth of a crocodile and the shape resembles letter U and when they shut the mouth, teeth alligator will not be seen at all while on the crocodile, alligator mouth shape longer like form letters V so that even his mouth, teeth crocodile remains visible.
On earth, the Alligator lives only in two places, namely in the United States (Most found in the Florida and Louisiana) and in China (in the Yangtze River valley). Alligator is a beast that lives alone and they reproduce by laying eggs.