Asthma
Barney was none too happy to be at the office. His plans for the day had clearly revolved around eating some cat food, curling up in the sun by the window, and then going back for some more cat food later. Unfortunately for him he had been periodically hacking for the past four days, and his owner was getting tired of racing across the house to hold a newspaper under his chin in an attempt to catch the hairball that he was apparently trying to bring up. So far no hairball had actually been produced, but the cat was still hacking.