Rattlesnake

Any one of several species of venomous American snakes belonging to the genera Crotalus and Caudisona or Sistrurus sometimes also called rattler They have a series of horny interlocking joints at the end of the tail which make a sharp rattling sound when shaken The common rattlesnake of the Northern United States Crotalus horridus and the diamondback rattlesnake also called diamondback rattler and diamondback of the South and East Crotalus adamanteus and West Crotalus atrox are the best known See Illust of Fang