photo of cascabel rattlesnake or crotalus durissus terrificus head close up on white background

snake cascabel animal nature venomous reptile rattlesnake wildlife venom wild serpent crotalus viper coiled poison scales dangerous rattler desert forest strike bell rattle jungle predator risky risk rattlesnakes snakes mountain rattles vibora raptor danger deadly lethal poisonous toxic western herpetology bite caution scale snakebite vertebrate isolated white durissus terrificus head close background background