First of all, congratulations on adding Maggie to your family she is beautiful. We just recently added, Legend, our bully puppy this past Thursday. He also has had loose stool and we are still transitioning foods. I talked with the breeder and she told me to give him a Pepto Bismol tablet. She didn't say how often so I've been giving him one everyday. Finally today, his stool is more firmer now. Everything you said your Maggie does is the same for Legend. Only difference is I have 3 other dogs, one is a 8 yr old bully the other is a Basset and a Dachshund and they want nothing to do with him. I hope that changes because he is so daggone sweet. Good luck with your little Maggie.