Too many toys just cant take the strain! The boomer ball is virtually indestructible and designed for those larger than life characters who love to chase and conquer and most of all chew. It is designed not to be picked up by the dog, so should be a size bigger than the dog can carry. and due to its rigidness it would cot be able to be compressed and less likely to be ground down by the dogs teeth. 10 ins ball.