I usually switch between a couple brands of dog food - Orijen, Acana, and Go! I decided to try out the pork recipe of Merrick dry dog food and since I added it to the food rotation, my pup has had nothing but diarrhea and a few instances of upset stomach including dry heaves and coughing up yellow bile. Had the vet check him out and he's fine, but I have taken him off of Merrick for good. What is everyone else's experience with Merrick? It seems like this is not usual for most dogs?