close up of a grand canyon rattlesnake's head

reptile animal wildlife lizard snake turtle amphibian tortoise serpent frog toad close grand canyon rattlesnake's head rattlesnake crotalus oreganus abyssus coiled resting rock venomous deadly pit viper found states arizona utah enjoys hot desert climates characterized tan colors patterned backs distinctive black rattle snake scales scaly eyes bite venom venomous posion poisionous death dead coiled curled poised closeup arizona desert utah heat cunning