Crocodiles and alligators are both reptiles from the same order of animals, named Crocodylia. There are however a number of important differences which set these apex predators apart *Crocodiles have a longer, more V-shaped head then alligators.
*The fourth tooth of a crocodile sticks out when its mouth is closed.
*Crocodiles are better adapted to living in seawater.
*Crocodiles are more aggressive than alligators.
*Crocodiles tend to have a lighter appearance than alligators.
*Crocodiles in the wild are found all over the world while alligators are only found in the US and China.