I have a dumb question. What size Kongs are you talking about? We've had one that Callie has never shown any interest in. Admittedly I haven't tried stuffing it with anything, but she doesn't even act like it's her toy. It seems to me like even the small ones are too big and hard for her to be able to squeeze at all to get anything out.
If you put something in it and freeze it, doesn't that only make it harder -- and does the filling melt out and make a mess? I'm confused
