Timber Rattlesnake up close on a log

timber rattlesnake crotalus adamanteus crotalus horridus rattlesnake diamondback canebrake rattler pit viper snake serpent venomous reptile bite viper wildlife north american rattle dangerous animal rattling georgia poisonous endangered conservation eastern scales coldblooded coil danger north america southern venom deadly fang fear pit behavioral behavior blooded crawl timber american south toxic cold toxin strike united states