I am no expert on any of the issues you raise, but I know that my first berner, when she was a puppy had continual diarrhea with no obvious cause and no diminution of her energy level when she was on Pro Plan. It cleared up immediately when I switched her to another kibble. This is NOT a blanket criticism of Pro Plan; I think different dogs react differently to the ingredients in the various feeds.
Susan . > > 1. Jack has had diarhea for about a week now but is acting fine > otherwise...We are feeding him Pro Plan Large Breed Puppy Formula...
