The first ferret I ever encountered came home to me as a "rescue" back in 1982. She would also get this TERRIBLE sounding cough. There was very little info on ferrets available then, & I had used some Cedar chips in her pan. We lived in a VERY humid climate, & I discovered that if I turned-on the electric radiator & dried-out her room that the cough stopped. Since we now know that many ferrets are allergic to Cedar chips, my bet is that when the cedar chips dried-out, she was no longer exposed to the oils that made her allergic. You mentioned that you just moved to a new house, so since Eddie seems just fine (eating, playing, etc.) except for the cough, my bet is allergies. Don't forget that NEW drapes, carpet, furniture etc. may have something on them that he is allergic to, so try to keep him in a "clean" area & see if the cough stops. if so, expose him to one new thing at a time to find the culprit. If a good clean & rinse of the area around him doesn't make a difference, you may want to have your air-conditioning system checked. He could be the first one in the family to notice mold, dust, spores, or some other substance in there that you really don't want to be breathing either! Best wishes, Lisa & Effe [Posted in FML 5647]