snake. drawing

adder aggressive anaconda animal asian biological biology bite boa carnivorous cartoon cobra constrictor contour creature crotalus danger doodle drawing durissus engraving eunectes fang graphic ground herpetology horror illustration long murinus nature old ophiophagus pitviper poisonous predator python reptile reptilian retro scary serpent silhouette sketch skin slither snake spooky sting symbol teeth texture tropical vector venom vintage viper wild wilderness wildlife zoo zoology