I have also wondered whether the overwhelmingly abundant health problems in ferrets might be caused by a universal mistake in their care...but when you look at the surveys/polls/opinions...there isn't a universal mistake. There is no common link between all the ferrets that get Adrenal & other problems. People are still looking for one they missed, though, such as unnatural light cycles, and testing the possiblity. Just a day or two ago, someone posted about how they did cover their ferrets at night, but still had a 50% or so Adrenal rate. There are Adrenal ferrets who are a year old or less. If it were caused by vaccinations--how could so few cause such huge problems? Personally, I think they are genetically prone to it. I don't even suspect MF and the big breeders so much as just domestication as a whole. I think it was probably around in small numbers in polecats because it still allowed time to reproduce before showing affects. Now it doesn't have a chance to be 'naturally selected' out of the population. Kara [Posted in FML issue 3867]