Win writes
>It is totally brown with just a little white patch under the chin.  It
>doesn't appear to have an under-coat but very dense brown fur.
 
You have exactly described a mink.
 
>It is very friendly and does not bite.  It appears to be neutered also.
 
Obviously it has been kept as a pet, so it cannot be returned to the
wild.  You may be required to have a wildlife rehabilitator's license
to keep it however.
 
I know some members of this list have kept mink as pets.  They can give
you advice on mink care, which is very similar to ferret care.
 
Linda Iroff
Oberlin OH
[Posted in FML issue 3895]