I was quite impressed by rave reviews. Now, my male, 15-month old, extremely healthy Rat Terrier who has never had any problems, has loose mushy movements and even had bad diarrhea after two weeks. He has also had gas numerous times, for the first time. It is so expensive, and he enjoys eating it...I have tried to see if he would improve but after three weeks, still loose movements. I am disappointed to say the least. I hate to change as I am giving it to my Golden Retriever, who also enjoys eating it. I will try one more week then must find something else as I doubt there will be improvement.