I did this with the Everlasting Treat Ball. At first glance, I really didn't think that it was made out of rubber tough enough to withstand being wedged between Elka's molars and really gnawed upon. I didn't think the edges would stand up to a very intent Doberman's tender mercies. I thought the treats themselves might be too brittle, and just crumble, and if I didn't use the treats themselves and just put treats in the center, well, why not use the Kong or Monster Mouth instead?
Well, I was wrong.
