This iconic snake, with its bulbous head and red, yellow, and black bands, is famous as much for its potent venom as for the many rhymes—"Red and yellow, kill a fellow; red and black ...

The docile, nonvenomous eastern indigo snake is known for its lustrous, blue-black body; the reddish-orange hue on its chin, throat and cheeks; and its large size, as long as 7 feet from nose to tail, ...