Many dogs have food sensitivities, if the sensitivity is to grain ingredients, you can rest assured that our products do not contain grain. If the sensitivity is to a particular meat protein, it is advisable that you feed single protein products containing alternative meat proteins. Our grass/bio-organic fed animal-meat sources are formulated in single protein recipes (see single protein FAQ), for this very reason. Many pet parents experience less sensitivity with Rockster products, due to our stringent, organic production process and the absence of cheap fillers, cereal and gluten. Overall, Rockster products carry a lower potential allergen content than most other pet foods.