Corn Snake

The corn snake (Pantherophis guttatus guttatus), or red rat snake, is a North American species of rat snake that subdues its small prey by constriction. The name "corn snake" is a holdover from the days when southern farmers stored harvested ears of corn in a wood frame or log building called a crib. Rats and mice came to the corn crib to feed on the corn, and corn snakes came to feed on the rodents.

http://en.wikipedia.org/wiki/Corn_Snake