Nicholas, you need to treat the root cause of the ascites. Usually it is cardiac disease for ferrets, though it can be cause by some other things, so the first step is chest x-rays. You can read about cardiomyopathy and a range of other health problems in http://ferrethealth.org/archive/ which is very easily used. Sukie (not a vet) Recommended ferret health links: http://pets.groups.yahoo.com/group/ferrethealth/ http://ferrethealth.org/archive/ http://www.afip.org/ferrets/index.html http://www.miamiferret.org/fhc/ http://www.ferretcongress.org/ http://www.trifl.org/index.shtml http://homepage.mac.com/sukie/sukiesferretlinks.html [Posted in FML 6007]