Mighty Mutts bones are heavy-duty rubber Toys and resistant to chewing. They are perfect for any dog that chews aggressively and can destroy other toys in minutes, and they come with a 3-year chew resistance guarantee. They feature a hollow center, making them ideal for stuffing with treats or pastes. They also float, making them great for fetch play. Suitable for dogs weighing between 13.5 to 27 kg.