[Hound Dog Mom]

Hi avamom –

I would recommend feeding a food of the list of appropriate large and giant breed puppy foods posted here. Blue Buffalo Wilderness and Nutro Natural Choice are not appropriate foods for a growing giant breed puppy such as a Mastiff. The Nature’s Variety Instinct Limited Ingredient Turkey formula or the rabbit formula might be a good food to try. Sometimes with sensitive dogs it’s trial and error until you figure out which foods are causing the issues.