The common snapping turtle (Chelydra serpentina) is a large freshwater turtle of the family Chelydridae. Its natural range extends from southeastern Canada, southwest to the edge of the Rocky Mountains, as far east as Nova Scotia and Florida and as far southwest as northeastern Mexico. This species and the larger alligator snapping turtle are the only two species in this family found in North America (though the common snapping turtle, as its name implies, is much more widespread).
Common snappers are noted for their belligerent disposition when out of the water, their powerful beak-like jaws, and their highly mobile head and neck (hence the specific name "serpentina", meaning "snake-like"). In some areas they are hunted very heavily for their meat, a popular ingredient in turtle soup. These turtles have lived for up to 47 years in captivity, while the lifespan of wild individuals is estimated to be around 30 years.
IN THE UK
In the UK about a dosen have been found mainly on the end of fishing lines. People are unsure of exactly how many are breeding here but there could be as many as 10-20 for all we know. They got here from being released by pet owners once they grew to big for them to handle.