I have seen, literally all over the place, about raisins causing kidney failure in ferrets. I did some searches on the web and could only find documented info on a dog case. And then a lot of speculation. Is there any real evidence of this? I mean other than anecdotal? I understand sugary treats aren't good for ferrets with insulinoma, but I must say that in over a decade of feeding raisins to ferrets, I have only had one out of 35 have any kidney problems. And he had horrible blockages from adrenal disease. Blessings, Margie [Posted in FML issue 5182]