Fourth tooth of lower jaw protrudes when mouth is closed. Found in brackish and salt waters rather than freshwater as the American alligator is.
American crocodiles are federally endangered.
This individual was transported illegally. American crocodile photos References Ashton, R.E. and P.S. Ashton. Handbook of Reptiles and Amphibians of Florida. Behler, J.L. and F.W. King. The Audubon Society Field Guide to North American Reptiles and Amphibians.