Recently I visited a pet boutique. In conversation I mentioned that my Gracie has no toys because she can even destroy a Kong. The owner talked me into this ball. It looks like a big pink rubber world by orbee-tuff. The one I purchased is a large, maybe 5-6" diameter. They rate it as a 5 out of 5 "chew-o-meter rating. It's real bouncy, floats and smells/tastes minty. It is guarenteed by the manufacturer. The lady told me that a dog may be able to tear the continents off but would not further destroy the ball. It's true, Gracie is deligently working at tearing off all the continents, but it still is a fully intact ball. Gracie loves it. She's had it for over 3 weeks. Worth the $15 investment for us!!!! I will try some of their other products that have the "5" rating.