Alligator Snapping Turtle (Macrochelys temminckii)
The Alligator Snapping Turtle is found in the Mississippi River and its tributaries throughout the Southeastern U.S.. They are also found in the Missouri River at least as far north as the Gavins Point Dam at Yankton, South Dakota. The Alligator Snapping Turtle has also been found in New England. It is also present in Indiana on the state's endangered species list.
The largest freshwater turtle in North America, the alligator snapper keeps to primarily southern U.S. waters, while the smaller, more aggressive common snapper inhabits lakes and streams from South America to Canada. These turtles can remain submerged for up to 3 hours. Typically only nesting females will venture onto open land.