I know it's a strange question, but our new puppy has been making a noise much like a cat trying to cough up a hairball (or almost like a dry heave, I can see his little tummy tighten....he's not vomiting, though)....has anyone seen this? I don't want to call the vet if it's nothing-he's got an appt in a few days anyways, but if it's not normal...He started doing it early this morning-and it's not constant, just every once in a while.......