My small Schnauzer has suddenly decided that he will not eat any of his meals unless there is some portion of a banana in the dish. He got his first taste of one when a piece fell on the floor and he gobbled it up before I could get it. I am concerned that this may not be good for this animal, but now he simply refuses all meals unless there are some pieces of a cut up banana on top. Can any of you animal lovers help me with info?