I recently noticed a few of my furbabies have been hacking lately. It seems as though they need to cough something up, but never do. I provide them with laxatone regularly for possible hairballs, but the hacking continues, thus not a hairball. All eat and play well, no other signs and symptoms of anything strange. Everyone recently went for a check up and vaccinations. At that time a couple of them were hacking, yet everyone's heart sounds were fine. My vet and I are not sure as to what the problem is, and wish to seek your help on suggestions and/or similar experiences. Not sure if it could be heart related, alergies, or a bronchitis type problem. Any information would be of great value to me. Thank you! Desiree [Posted in FML issue 4278]