The corn snake ("Pantherophis guttatus") is a North American species of rat snake that subdues its small prey by constriction. It is found throughout the southeastern and central United States. Though superficially resembling the venomous copperhead and often killed as a result of this mistaken identity, corn snakes lack functional venom and are harmless and beneficial to humans by helping to control populations of wild rodent pests that damage crops and spread disease. Their docile nature, reluctance to bite, moderate adult size, attractive pattern, and comparatively simple care make them commonly kept pet snakes.