I too have done much research on corn.....not the best choice. I give gracie Authority lamb and rice dry ( I get it at Petsmart) It's made with real lamb and contains NO corn, and No animal by-products. She loves it. I had a hard time finding a puppy chow that had lamb, rice and no corn, no by-products, and was highly-digestible and contains antioxidants and Omega fatty acids for coat.........I'm sold on this product.........and it's very small kibble to boot