Our poor kitty was suffering from severe stomach issues, vomiting, diarrhea and weight loss. Vet put him on meds and their version of special diet, to no effect. Finally the vet said he might have IBD and be having an allergic reaction to meats and grains used in common cat foods (we couldn't afford the surgery to find out for sure if it was IBD). Vet said to try feeding diet of rabbit, venison, salmon or kangaroo. I was desperate trying versions foods grain free and with no chicken or other meats. At Petco I found the Frozen Raw Diet Duck Formula and he absolutely LOVED it. Within a month we were seeing an amazing transition. NO more vomiting or diarrhea; within 2 months we could see he was gaining weight. We then tried kibble and wet and he loves them too. Today he is a very happy AND healthy cat. I can't believe we almost lost him, he was basically starving to death. Thank goodness for Nature's Instinct!! Now we feed nothing BUT Nature's Instinct.