I have written about this before, bitting.
 
My female ferret who turned 13 weeks old yesterday, bites so much.  I have
had her since she was 6 weeks old.  I have been told to give her time-outs,
scruff her, tell her "NO" and push my finger in her mouth.  I always say
NO, and I push my finger in her mouth when she bites my finger.  But she
bites so much and so fast, that I would be saying NO non-stop.  When I pick
her up off the floor of something, she starts to bite to get away.  Most of
the time it is playfull bites, but if I hold her for any reason like just
to pick her up to move her she will want down to play that second and start
to bite.  I even bought bitter apple and put it on my hands and arms, she
took a bite stoped for half a second then just started to bite again.
Nothing fazes her.  When I scruff her, she just starts to bite when I let
go, I don't want to be telling her NO all the time, and I miss many bites
because by the time I say NO or something she would have already bitten
many more times.  The first few times I said NO she stop and look, then
bite again, and again and again.  Then after a few days she would bite and
saying NO would not stop her.  I can not pick her up for 10 seconds with
out her getting frustred and wanting down and she will bite until I let her
down.  I know I am not supposed to put her down when she bites or she will
learn the all she needs to do is bite to get put down.  What do I do, she
is real cute and I don't want this to get out of hand.  I try tom offer
her treats when she is good but she wont take them.  She is not scarded or
anything she is just real playfull, I love watching her play and all it is
cute, but the bitting needs to stop soon.  I don't want her to be older
when she has shaper teeth and still be bitting.  It is all non-stop
bitting.  One bite after another.
 
heard of telling her"NO
[Posted in FML issue 3196]