Zignature's Trout and Salmon Meal Formula dog food come from the chilly water of the Northwestern United States. This grain free dog food is a great source of protein and heart-friendly Omega-3 fatty acids, making this the best dog food for your pup. Trout and Salmon are good for younger pups with any pet food allergy, making this formula a good start for elimination diets and a fantastic puppy food. The healthiest pet food for your pup is grain free, full of powerful antioxidants, and is rich in low glycemic carbohydrates, making this formula the healthiest dog food on the market.