You can feed them frozen/thawed mice, you can get frozen/thawes mice at a pet shop. I have a baby 2004 female ball python that eats frozen/thawed mice and my adult male eats frozen/thawed mice to he eats 3-4 frozen thawed mice a week and he will eat frozen/thawed small rats to. No matter what kind of snake your brother gets it will mostly eat mice. Thanks Scott glover

