Excellent ball for big dogs. I have a Rottweiler that destoryed any toy he got, nothing was up to his tests... Until Chuckit came along. Bought him regular sized balls that squeaked first, he loved them. Then he lost them, so figured id get the biggest one and he wont lose it. He went nuts for this ball, even learned how to catch it too in his giant mouth. Hasnt punctured it and the ball has held up well. Must be made of good rubber, weirdly it smells nice too. So no yucky smelly dog toy.