As your Pacman frog grows, sho should its diet. As a juvenile, Pacman frogs should be fed daily with calcium and vitamin D3 supplements added to their meal 3-4 times a week. Juveniles will eat small earthworms, pinkie mice, crickets, and waxworms. Adult horned frogs can handle larger prey items such as earthworms, locusts, crickets, cockroaches, mealworms, fuzzie to large mice, feeder fish, slugs, and snails. Adults should be given supplements a least once a week.