speckled rattlesnake coiled on the desert floor in tucson arizona

desert arizona snake rattlesnake reptile animal wildlife rattle venomous venom speckled deadly dangerous poison nature danger serpent predator poisonous viper herpetology scales southwest pit scale wild crotalus head southwestern closeup fauna stripes striped rosey herpetological close lethal background coiled floor tucson mitchellii captivity sonora museum arizona ground raised eyes looking forward snake#39aph39#s body covered brown black generated