Is an alligator a crocodilian?

Yes, the American Alligator is a crocodilian.

American Alligator

A crocodilian is an alligator, crocodile, caiman, and a gharial.

Crocodilians are large, predatory, semi-aquatic reptiles.

Photographer: Martina Nicolls

Martina Nicolls: SIMILAR BUT DIFFERENT IN THE ANIMAL KINGDOM