Hi Cheryl,
I’m so sorry for the loss of your brother.
That’s wonderful that Timber is a therapy dog! It takes a special dog to pass that test. I’m sure your brother would be proud.
Do you know what Timber was eating when he was still with your brother, and if he was having any digestive issues then?
Like C4C, I also wondered about the fecal tests. Are they testing for “everything?”
My thought would be some sort of food intolerance. Do you have a list of those foods you tried with no luck? I’d take a look at the ingredients and compare them against one another. I have a dog with food intolerance issues. Keep in mind that intolerances are not just proteins, but other ingredients too. Mine cannot eat any form of fish, chickpeas and lentil, garlic and flax.
I’d also consider trying a limited ingredient diet. If it works, keep him on it for at least six weeks until the histamine clears out of his system before rotating to another food.
