Iams Dog Food Nutrition Interactive Factbook
I can't speak for everyone, but in my book, Iams makes the best dog food out there. You can use this neat little tool to determine what kind of food your dog should be eating, what the protein-fat breakdown should be, etc. Then, you can go to http://us.iams.com/iams/dog-food.jsp and put in your dog's basic information. It'll help decide which Iams product is right for your dog.