Brook's kingsnakes, from Florida, feed on rodents in the wild. In captivity, you'll need to offer thawed frozen mice as the mainstay diet. A young snake (those less than 2 feet long) can eat up to six or so pinkies or hopper mice weekly. Once the snake is a year old and reaches adult status, feed him one to four mice every week. A reluctant feeder, particularly one not born in captivity, may prefer lizards for its first meals. After a month or so of lizard meals, rub a thawed frozen pinky mouse with a lizard (this is called "scenting"), which helps the kingsnake make the transition from feeding on lizards to mice.