Description: 36 - 72 inches. Bullsnakes are light, yellow or straw base color, with a row of dark blotches running down the back. The sides have smaller blotches, bars, or speckling. Blotches and other markings are usually very dark near the head and tail, but usually fade to a light brown or rust color in the middle portion of the body on adults. The belly is light colored with a series of dark squares scattered on it.