Northern Prairie Wildlife Research Center
When disturbed, bullsnakes will try to escape without incident. If, however, they are cornered, they will hiss loudly, vibrate their tails, open their mouths and boldly strike. Because of this aggressive behavior, many bullsnakes are killed by people who believe these snakes to be poisonous.
Bullsnakes feed mostly on rodents, although small birds, and even chicken eggs may be consumed. Their prey is usually killed by constriction, then swallowed whole. The consumption of rodents makes bullsnakes very beneficial to agriculture. Large bullsnakes (five to six feet long) will consume one to four mice a week.
These snakes can be found west of the Missouri River in areas of grasslands, meadows, or fields.