Dog loved it but not as tough as you'd expect from Kong
Bought this for my large GSD junior (10 months), he wasn't interested really in balls but took to this straightaway, loves running round with it in his mouth squeaking!
As others have said, cover comes off quite quick and he has now made holes in the ball itself so it "puffs" rather than squeaks, but he still loves this over his other toys.
Lasted around 2 weeks for cover to come off and 3 weeks for holes.
Great toy, but a shame it is not as resilient as you would expect from Kong!