Sophie had pancreatitis and she couldn't handle hamburger (too greasy). Had the vet done a blood panel to test his protein levels? Re-read your post and my only suggestion to find a specialized vet - internist. A specialist makes all the difference in the world because a regular vet just doesn't have time to research causes. I also found that not all vets are knowledgeable about Yorkies and their sensitive tummies. Warmly, Deborah |