This is a snapping turtle (Chelydra serpentina). She/he has a wonderful ancient face. There are numerous interesting facts about snapping turtles and I will tell you two.
First, on wikipedia the content about the common snapping turtle is mostly about how to (or not to) pick one up and move it.
The second is that the common snapping turtle is the state reptile of New York. It was nominated by elementary school children and then received "sweeping" approval by the New York Legislature. Anyone who followed this past year of the New York legislature can appreciate that sweeping approval isn't something they are used to. Does anyone know of other state reptiles?
I need to put keywords to this image for the stock photo companies. Besides all the obvious biological ones can you name some conceptual ones that come to mind? Help...