American Alligator

It's easy to distinguish an alligator from a crocodile by the teeth. The large, fourth tooth in the lower jaw of an alligator fits into a socket in the upper jaw and is not visible when the mouth is closed. This does not happen in crocodiles. Alligators have between 74 and 80 teeth in their mouth at a time. As they wear down, they are replaced. An alligator can go through 3,000 teeth in a lifetime.

Male alligators are larger than female alligators. The average adult size for a female is 8.2 feet (2.6 meters), and the average size for a male is 11.2 feet (3.4 meters). Exceptionally large males can reach a weight of nearly half a ton or 1,000 pounds (454 kilograms).