The Three-toed Box Turtle.
They are found from Missouri south to Texas and Alabama.
Their natural habitat is widely varied from woodlands to meadows, but usually near
a source of water. As their name indicates these turtles usually have three toes on
their hind feet, though occasionally they can have four. There are at least six
recognized subspecies of eastern box turtles in the genus Terrapene carolina,
four of these are found in the United States and two are found in Mexico These
turtles are highly variable in shell shape, pattern, and coloration.
For more info click the link below.

http://animal-world.com/encyclo/reptiles/turtles/EasternBoxTurtle.php