I have noticed my kittens coughing once in a blue moon, and the cough is very gutteral and deep, and odd sounding. They cough real bad and then it is over. Does this sound like a hairball? There are no other signs of URI or anything.
Yeah, that's probably a hairball cough. Have they brought up hairballs? Hairballs can be prevented by regular grooming and once-a-week administration of hairball prevention gel.