Something interesting that I found on the Ebay rules:
 
>However, because prohibited by federal law, no sales of any item that
>contains cat or dog fur will be allowed.
 
Because they are domesticated companion pets.  Well, the ferret is the
3rd most popular companion pet now.  Seems ferret fur should be included
in that also now.
 
Andrea
[Posted in FML issue 4639]