Ruffwear Gnawt-A-Rock Red Sumac Dog Toy $24.99 Join our Pet Club and save an extra 10% off for a year. 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to Cart Yikes! We're running low on this item. Here are our favorite alternatives currently in stock. Ruffwear Gnawt-A-Rock Dog Toy was inspired by real lava rocks. This resilient, natural rubber toy resembles the popular token, but it designed to engage and reward our doggie friends. Gnawt-A-Rock Features: Erratic bounce for engaging fetch Faceted surface for gum-massaging Top rack dishwasher safe Ruffwear began with a drive to explore the great outdoors, and founder Patrick Kruse rarely did that without his four-legged companions. Ruffwear's passion for for creating durable products that are suited for the elements is shown in every collar, leash, and adventure accessory they make. Ruffwear aims to practice sustainable sourcing, waste reduction, and environmental consciousness in every product they make.