The rat snake is one of the most widely distributed and abundant of all the North Carolina snakes. Two subspecies inhabit the state, the black rat snake, found in the piedmont and mountains, and the yellow rat snake, found in the lower coastal plain. The largest one ever found in North Carolina measured over seven feet. This snake feeds mostly on rodents and small mammals, with an occasional visit to chicken houses for variety. However, their extensive predation on rodent pests more than makes up for the occasion chicken or bird egg.