When you are looking for a quality pet food for any type of dog, you need to look at what type of animal you are feeding, and what job it is doing.  For example, if I am feeding a Shih Tzu, I want something that is going to help with that incredible coat they grow, and since I know they have issues with bad teeth, I want a good tartar control agent to address that.  If I am feeding a duck hunting dog, I am going to choose a food with special attention paid to a joint supplement.  Choosing a food because it is on sale is always a bad choice, it can actually cause all sorts of digestive problems and dog food allergies.  Also, if you can’t easily identify at least the first three ingredients of a dog food, it is an automatic loser in my book.  You don’t want the food your dog is eating to be filler material.  Royal Canin is the product my house pets all eat.