Science Selective House Rabbit has been uniquely formulated for house bunnies. With Timothy hay grass and thyme it provides and array of forage to reflect natural foraging behavior. Fortified with essential vitamins A and D, 22% crude fiber and balanced calcium: phosphorus so you can be sure you are providing your rabbits with the finest quality nuggets that will help support wellbeing and promote vitality. That's why vets recommend Supreme Science Selective.