I forgot to add...as far as suggestions, I'd recommend Orijen and EVO. If you're on a budget, Taste of The Wild and Chicken Soup are two good quality foods for a reasonable price.Purina is one of the lowest quality brands available. When choosing a dry kibble, always avoid ingredients such as by-products, corn esp in the form of gluten meal, soy, and any unspecified animal sources. (ex. "animal" is unspecific..."chicken", "turkey" ect is specific) Grain-free is always a plus.
This website has some good information: www.dogfoodanalysis.com