Made cat ill.
After switching to this food my cat became very ill, not only did he need to be treated for constipation, he became withdrawn and began having asthma attacks. He was also very obsessive about the food, would gorge whatever was put out and would hang around where the bag was stored. He has had a variety of foods, before and since, and some have caused stomach troubles but not seen any affect him in this way before. It's possible there is an ingredient he was allergic to, but I feel there must be something addictive in there for him to keep going back as he did.