Rubber Dog Chew Toy - Exercises Teeth Jaws - Design for Strong Chewers Rubber Dog Chew Toy is designed for strong chewers. The center of the toy is constructed with ridges and rubber spikes that are great for cleaning teeth and grinding down plaque. It's constructed with super-strong rubber that is durable and long-lasting. Your dog will have hours of chewing fun with a toy that can withstand use. It's small enough for puppies, yet strong enough for larger dogs with sharp teeth and a big bite.