what kind of poisonous snakes are in oklahoma
List of snakes of Oklahoma Venomous snakes Agkistrodon contortrix—copperhead A. piscivorous—cottonmouth or water moccasin Crotalus atrox—western diamond-back rattlesnake C. horridus—timber rattlesnake C. viridis—prairie rattlesnake Sistrurus catenatus—western massasauga rattlesnake S. miliarius—western pygmy rattlesnake