I don't know whats up with Loki. When we first got him his stools were soft to a diarrhea, I attributed this to a food change. His stools got hard after a few feedings. Now its back to very soft or diarrhea like. He's on pedigree puppy dry mixed with the wet. (not my choice of food.) Oh and hes a 9 week boxer. Also he seems so skinny, his ribs are almost always showing. Please help.