Prairie Kingsnake
Lampropeltis calligaster

Size:  2 1/2 - 3 1/2 ft
Distribution
Statewide except for the western part of the panhandle.  The prairie kingsnake, like other kingsnakes, will eat other reptiles, but usually preys on rodents.  They are constrictors, squeezing their prey before consuming them. Oklahoma is home to two color varieties, blotched and striped. The picture below right has faint striping.