Question: is there such thing as an alligator snapping turtle

Answer: Yes, The alligator snapping turtle (Macrochelys temminckii) is a species of turtle in the family Chelydridae, native to freshwater habitats in the United States. M. temminckii is one of the heaviest freshwater turtles in the world. It is often associated with, but not closely related to, the common snapping turtle, which is in the genus Chelydra. The specific epithet temminckii is in honor of Dutch zoologist Coenraad Jacob Temminck.