I switched to Iams last week and I have already noticed that my girls don't need as much food. I still plan to check into the Diamond product as my brother is feeding it to his two black labs and they have the most beautiful coats. They are Dixie and Buck (daughter and father) and are BIG dogs. Dixie is only six months old with huge paws, and Buck is full grown and weighs in at 120 pounds. They are as spoiled as Honey and Lilly. Won't it be an exciting Christmas....six dogs, one of them weighs 5 pounds!