Common and not dangerous to humans. Often confused with rattlesnakes, but the tail is long and thin with no rattle.
Venomous and potentially dangerous. A heavy-bodied pit viper, with a thin neck, a large triangular head, and a rattle on the end of the tail.
Common and not dangerous to humans. Color and pattern is highly variable, but there is usually a yellow dorsal stripe and a yellowish stripe along the bottom of each side.
Common and not dangerous to humans. Dark olive brown, gray, or black ground coloring with a pale yellow or cream colored solid stripe on each side which extends from the back of the eye to or beyond the vent.
Common and not dangerous to humans. Adults of the species are 20-75 inches long (51-190 centimeters) A slender snake with large eyes.