I started out with a Pit a couple years ago. According to my vet he had an allergy to corn products in his food. I stopped feeding him Iams and switched to Diamond Lamb and rice as per my vet's recommendation. He did really well with that. Had to get rid of him because of dog aggression and current living arrangements. I now have a treeing feist and feed her the same Diamond Lamb and rice. When compared to other foods with similar ingredients it has the best price.