Alligator Snapping Turtle- Adult snappers have no natural predators other than humans, who capture them for their meat and shells, and to sell in the exotic animal trade. A severe reduction in population due to unregulated harvesting and habitat loss has led states to protect them throughout most of their range, and they are listed as a threatened species.
The Alligator Snapping Turtle (Macrochelys temminckii) is the heaviest freshwater turtle in the world. It is often associated with, but not closely related to, the common snapping turtle, which are in the genus Chelydra. The alligator snapping turtle is given its name because of its immensely powerful jaws and long spring like neck, as well as distinct ridges on its shell that are similar to the ridged rough skin of an alligator.
The modern snapping turtle evolved over 40 million years ago, while anatomically modern humans emerged only 200,000 years ago. Snapping turtles hung out with dinosaurs, but they're not closely related at all. Birds have more in common with dinosaurs than snapping turtles do.