10 year old mini-poodle started pushing his bowl up to 10 feet from where it's been for most of his life. He started this about a month ago after I began experimenting with changing his food. Obviously it has something to do with the food change, but I'm adding a small amount to his regular food to ease him into the change. I feed him Taste of the Wild "Salmon mix" and have for most of his life. I'm changing because it is one of 16 identified by the FDA as causing heart problems. Has anyone else had this problem?