I agree pretty much with Darrin's post, but I just wanted to add
something.  Darrin had said:
>As long as your cage is not one that can hurt the ferret should they
>continue to bite it, the best advice is to IGNORE IT.
 
He was saying, basically, dont reinforce 'bad' behavior.  While, I agree
with that for the most part, my concern is that the ferret may be saying
"I'm not getting enough Out of Cage Playtime"!!!  He may have energy to
burn and maybe he is saying he's not being exercised or played with
enough.  Not implying anything about the original poster, but I just
wanted to point out that the ferret may be trying to tell him something.
 
Andrea
[Posted in FML issue 4678]