My 18 month old vizsla is a master at destroying toys, and I'm always on the lookout for products that can stand up to his enthusiastic play and chewing needs. The entire Zogoflex line has stood up to the test! We love the Tux because it's so versatile....it's great stuffed with treats and so much fun to chase and play with even when it's empty. Finally a product that is safe, durable and fun!