I'm with Sava... it's up to the kid.
PB and I joke about our future kids being "cups"... half-bearcub, half-shepherdpuppy. But we figure as they develop their own personalities, they'll decide what kind of animal suits them. If nothing else, we'd be fostering a child's imagination... something that is definitely not a bad thing in the least.
And hey, if the kids end up being furs, then they'll have a very accepting environment for it. If they don't, no big deal.
-Kai.