I wrote a review earlier thinking this was a toy that my 10-month-old Bullmastiff couldn't destroy. I guess I should have waited because it only took him 3 days to start breaking off pieces of the large Huck toy. So I'll be using the 100% guarantee after all. I even ordered the Hurley so he'd have two toys that would last. I don't hold out much hope for the Hurley now that the Huck has been, literally, chewed to pieces.