Hi, all! I'm new to the forum and have a 10 week old Great Pyrenees pup named Kuma. He's had diarrhea and loose stool since we brought home two weeks ago. I've tried pumpkin in his food since then and it's gone back to the proper color but the consistency hasn't changed. We've had him checked for giardia which came back negative. I'm wondering if it could be allergies? We were told to keep him on the Puppy Chow (ew.) that the breeder was using for the first month and then transition him to a higher quality grain free food. Maybe the fillers, grains, and corn are making him ill? I'd appreciate any input!