My one-year-old Pit Bull/Weimaraner mix destroys every toy that deems itself "indestructible" with her jaws of steel, yet gets very bored with products that last (like Nylabones). I spent a few days researching toys online and came across the Tux (and Huck) and took a gamble since it had good reviews and a guarantee. My dog LOVES this toy when I fill it with chunky peanut butter! It keeps her busy for an hour. With her best wolf-like effort, she's put a few small dents and scratches in it, but it's still completely intact. I can't believe it! Plus, she loves to play with it! I'd highly recommend this toy (and the other Zogoflex toys). Thanks--I'm a permanent customer!