The bullsnake is Missouri's largest snake. It is tan, yellow, or cream-colored with numerous, large, brown or black blotches. The markings along the back and sides are generally black on the neck and tail, and brown at midbody. The tail may have light and dark bands. There is often a dark line angling from the eye down to the jaw, and black bars along the upper lip. The belly is yellow or cream-colored, with a checkering of square or rectangular, dark brown or black markings. If approached or cornered, a bullsnake will coil, vibrate its tail, and hiss loudly with the mouth partly open. If captured, it will bite to defend itself, but some individuals will calm down quickly and can be handled with ease.