[Wylie's Mom]

First, is the Orijen what he was eating when he came to you -- or is that a brand new food for him? Bc if it's a sudden food switch, that could cause a lot of digestive stress - esp. w/ a new environment. How old is this pup?

Did the vet do a fecal test? If not, they need to asap. What med was given? I would continue to give it. I would probably not feed the Hills, personally.

If the diarrhea continues, he'll need to go back to the vet since he is a puppy. In the meantime, it's really important that he eats. You could try some mashed potatoes (w/ a bit of butter/salt for flavor) - canned or fresh (I always keep canned/sliced on hand for my dogs, in case of sickness). Try giving a bit of a plain cracker, bread - to help settle the tummy - let him have a good portion of it if he's interested.

You should have Nutrical on hand to give this pup - or give Karo syrup or honey if he gets lethargic (sign of low blood sugar). With yorkie puppies, you need to know that w/ diarrhea - they can go down FAST and be in a sudden, emergent situation very quickly. So, you really do need to keep a VERY close eye on him - get food in him, keep him hydrated, give him the meds, take him back to the vet if he's not feeling better very soon.