Sorry to hear about your ferret.  Prostate problems are not common in dogs
and cats.  Prostates becoming big even to cause a urinary blockage are
rare in dogs and cats.  Unfortunately we do see prostate problems in male
ferrets with adrenal gland disease.  It can become fatal if the adrenal
gland disease and the enlarged prostate are not treated.  Hopefully when
the new edition of the book Ferrets, Rabbits, and Rodents comes out, it
will have more on treatment options for adrenal gland disease and for
prostate problems, so more vets will be aware of this serious problem.
 
Again sorry about your loss.
Jerry Murray, DVM
[Posted in FML issue 3438]