My new adopted ferret, Fidelity (Fidel for short - previously Charlie Brown)
delights in putting my finger in his mouth.  He doesn't bite down, just
holds it, unless I try to take them out.
 
First, why does he do it?  Does it have something to do with nursing?
 
I would like to break him of it, but I don't want to correct him the same
as I do when he bites or nips.
 
Does any one have any suggestions?  I do tell him no, but that doesn't seem
to stop him from putting them in his mouth.  I think it does keep him from
biting down
[Posted in FML issue 2351]