Can anyone recommend nice training treats for a 3 months old puppy? I've tried three different kinds (blue bits soft moist natural - turkey, a lamb+venison jerkey and plain cheerios), but he has zero interest. He did eat the lamb+venison jerkey on the first day, but no longer takes any. The other two he did not even touch. Oh, I've also tried small pieces of blueberries. He licks them, but doesn't really like them very much. I can't get any training started because he shows zero interest in treats