How can I tell venomous & nonvenomous snakes apart?
The rattlesnakes, copperhead, and cottonmouth are pit vipers. They are characterized by a pit between and slightly below the eye and nostril, long movable fangs, a vertically elliptical “cat’s eye” pupil, undivided scales on the underside of the tail, and a large triangular-shaped head that has a small, smooth, shiny cap over the nose. Nonvenomous snakes have round pupils, a large smooth cap over the top of the head past the eyes, divided scales on the underside of the tail, no pits and no long fangs. Unlike venomous snakes, most nonvenomous snakes cannot bite through clothing.