wild western diamondback rattlesnake crotalus viridis coiled on a dirt road in strike position

alert animal brown camouflage coiled conservation crotalus danger dangerous deadly defensive desert diamondback dirt ecology grass ground habitat head herpetology herping macro native nature northern outdoors pattern pit plains position prairie rattle rattlesnake reptile road scales single snake southwestern species states strike sunshine thermal united venom venomous viper viridis western wild wildlife willardi