Your furry friend might never want to go back to a tennis ball again after you throw him the Nerf Dog TPR Spike Ball Dog Toy during your usual game of fetch. This ball features peaked spikes that offer him a satisfyingly good grip that he’ll want to sink his teeth into again and again. Lucky for both of you that it’s designed with ultra-durable, ruff-and-ready thermoplastic rubber (TPR) so it’s able to withstand hours of vigorous chewing.