I had a male ferret who was a rescue and he developed a very blue tummy.
It turns out that his spleen was grossly enlarged.  May I suggest that you
take Banditt to the vet and have him checked out.
 
Sally St. Germain and her 10 "Little Saints."
Hi.....my name is Sally.....I'm a ferret-a-holic!!!
[Posted in FML issue 2644]