Crocodile Versus Alligator: Skulls Compared

Skulls of alligator and crocodile at the Ernest F. Coe Visitor Center of Everglades National Park.
Alligator on the left, crocodile on the right. Everglades National Park, Florida. 

Here they are. Side by side. Together in death. No explanation needed to see the differences. Sharp teeth. Keep away from them.