[Nancy C]

Hi Stacey – this can be a difficult mystery. Check out my post that I just sent (near the top of the page) under “ZiwiPeak” — as an idea. Last spring my vet thought our GSD’s digestive problem “Might Be” EPI. Turned out it was due to a SOLESTO flea collar which was making him terribly sick with some of the standard symptoms of EPI. The food I discuss there is highly digestible. Good luck. Don’t give up! There is a solution somewhere, but the food is definitely part of it.