Our Plummer Terrier, Bosci, had ripped to shreds every single toy he had, until the Fenrir Red Hammer arrived. In several weeks of play, he has not managed to even dent it (although it has dented plenty of our toes, shins etc - it is not a lightweight toy!). Although it is nearly as big as he is, he loves it, waving it around like Thor himself, and tossing it thunderously onto the floor. Thank you Fenrir (I think).