Dog Tuff's Toughest Stuff! Guaranteed Dog Toys –  Ruff Dawg, Tuffy, Westpaw, Goughnuts, and more! Tough, Durable Dog Toys Backed by a Replacement Guarantee. Tired of spending money on dog toys that don’t last? Shop DogTuff’s collection of guaranteed dog toys is specifically designed for aggressive chewers and backed by a replacement guarantee. These virtually indestructible dog toys are designed for power chewers and have been tested to withstand rough play, heavy chewing, and tugging.