Yes, filing down the canines is a horrible thing to do to a ferret. Those ferrets will almost certainly require dental and/or medical care later in their lives as they develop painful and life-threatening tooth and jawbone infections. If you talk to them nicely and they refuse to change their practice, and if the local humane society or ferret-friendly vets can't convince them to stop, then I'd say yes, a boycott is definitely in order. Dennis [Posted in FML issue 1201]