My cocker spaniel, now 12, is allergic to chicken. Lots of stomach issues.
Just recently slowly changed him over from Lamb (which actually had chicken in it) to the Nutro Grain Free Lamb and Potato in the a.m. (small amount, maybe 1/4 can) and for supper he gets Blue Lamb about 1/2 small can with an extra lean ground beef pattie. He still mangages to get about 1/2 small can of Cesar's Lamb (which has the chicken, but he won't let go of that.) He is so much better stomach wise. Have to watch the treats,too. They contain a little chicken. He has had the stomach problem since he was 5 months old. Blood work-up is very good.