Zogoflex® stands up to gnawing, chomping, biting, clawing, endless fetch and lots of tug-o-war. It’s stretchy, bouncy, flexible and made to bend, not break. That said, we do meet the rare dog who can defeat it. If you feel that your Zogoflex® wasn’t up to snuff, you can get a free one-time replacement or refund. You can now congratulate yourself on having a champion chewer as less than 1% of Zogoflex® gets returned!