I have a cat with suspected IBD who vomits regularly. I switched from chicken to turkey (Hare Today 80/10/10 grind with Alnutrin) about four weeks ago and have seen no change. Is it possible that it's not the protein source but the little bone bits in the grind that are causing him to barf? It's always bile, usually with hair, and often a few teeny pieces of bone. He's always had a sensitive stomach and habitually vomited up dry cat-food for years (my ignorance was never his bliss). I have to make another HT order soon. Would it be worthwhile to try a completely boneless chicken mix -- i.e., boneless ground, ground organ, Alnutrin with eggshell?