Actually, since they preceeded it with the "nice pets" part, it's not
necessarily a bad thing.  Far better that people know NOT to but little
Jane's ferret our for playtime with little Julie's guinea pig (or mouse,
or rat, or ...) than to have a traumatic experience that might result in
ferret rejection or death.
 
BTW, parakeets will also chew off guinea pigs' ears ... piggers have no
real defensive capability.
 
Peri
-----
My husband always reads Readers Digest and at the bottom of some articles
their are little articles where people view their comments: This is the
Sept.2002 pg. 145
 
I won't quote the exact words but to the effect someone wrote about
Ferrets are nice pets, but they chewed off a guinea pig's ear.  Written
by Bill Porter.  I didn't care for this comment.
[Posted in FML issue 3926]