There have been a lot of postings about Kong ferret toys. I have gotten a small blue and white one two years ago for my kids and it is holding up great.....another thought. if you are interested in hard rubber toys, how about a lacrosse ball? It's a very hard rubber, and virtually ferret proof. I had a couple of these lying around from my sons' lacrosse years, and my little dooks love playing Ollie-ball with them. (A game of toss the ball and wrestle for possession that my ferret Ollie made up.) [Posted in FML 6656]