My five year old cat max started coughing two days ago. I brought him to the vet today and he said his heart and lungs sounded good. He gave him a round of antibiotics and said if he does not improve then the next step is an xray. I hope that it is a cold but its awful not really knowing for sure. The vet went over everything from asthma to heart disease so I am a bit freaked out. I was also thinking it could be a hairball because he is proned to them but he usually hacks them up with out a struggle. I have been giving him hairball treatment also. I guess my question is how common is it for a cat who never leaves the house the have a cold? Any advice is appreciated. Thanks, Jenn