I have had two ferrets this year shed half the hair on their tail. It
worried me at first, but after a month or so it began to grow back. You
can speed the process by washing their tail in antibacterial soap once or
twice a day, but it will still take a couple of months for the hair to
come back in full force.
From:
Lori and Rat's Brats
[Posted in FML issue 4307]