Angela,
 
I would advise close supervision whenever your kitten plays with the
ferrets, at least until she grows a fair bit.  I don't think there is
one set answer, of course, because it depends on your ferrets.
 
When we got two kittens last fall, three of our ferrets were OK with them
but Myron started seeking the tiniest of the kittens (true, after the
latter had playfully swatted him silly while Myron was trying to sleep,
until the latter had enough and got on his "I'm gonna getcha" look) with
what seemed less than playful intent.  We never got to find out for sure
because we monitored their interaction very closely over time and were
ready to rescue the kitten anytime it seemed in trouble (he was tiny, a bit
of a runt, whereas the other was bigger and was not mistaken by Myron with
helpless prey).
 
Over time the kitten grew to the point that Myron was no longer confused.
Remember, even domesticated ferrets may often instinctively go after mice,
birds, snakes, even rabbits.  It is always possible for one of or more of
them to mistake a very little kitten with a prey.  Then again, they may
not.  But I would advise close supervision until the kitty is fully
integrated with the ferts.
 
I'm probably telling you how to such eggs but the first thing I'd do after
the kitty has his vet checkup and shots is exchange her bedding with that
of the fuzzies for the night, so that she and her future fuzzy friends get
a chance to get used to each other's smells, and they are no longer total
strangers to each other.  Then proceed to introduce them to each other
the day after under close supervision, rewarding friendly behaviour and
discouraging the opposite.  If things get stressful for either side, put
an end to the session until the next day, and then make it progressively
longer each day.
 
Over time, I think you'll be surprised and delighted at what close pals
kitties, cats and ferrets can get to be.  Particularly younger kitties who
lack a parental feline role model often find ferrets to be so *cool* that
they want to be ferrets too (and some may even end up believing that they
are for a while, and acting accordingly!).  But to get there, the critical
part is getting them introduced to each other properly.
 
Hope this helps,
 
Jaime
[Posted in FML issue 3082]