My Spinone Italiano loves to chew. He recently ate through a rubber "indestructible" ring in 5 minutes. He has had his Bumi (it's yellow so we call it the "banana slug") for 10 months and hasn't put a mark in it. It's his favorite toy and he frequently settles down with it for a prolonged gnawing session. He also loves to tug on it, throw it in the air to himself with his mouth, and retrieve it when I throw it in the yard. We haven't tried it in water yet, but I'm sure it will perform well there too. He has no interest at all in his Hurley toy for some reason.