Gotta give this a 5 star. I have a 'Maitau' Great Dane. This is THE toy. Safe, big and flexible. She chews it, she plays tug with it, fetch, sleeps with it. She cannot destroy it.
I wash it and give it to her and because she loves to lick it after dinner for about 10 minutes. It aides in her salivary enzyme production and thus her raw food is digested easier. (no data on that, it just what i believe)
She even brings it to me when I'm down. I love, love, love, this "Tux".