Naki'o, a dog with four prosthetic devices shows off one of his legs with the prosthetic and one of his legs without, in Colorado Springs April 12, 2013. Naki'o lost all four feet to frostbite when he was abandoned as a puppy in a foreclosed home. Picture taken April 12, 2013. REUTERS/Rick Wilking (UNITED STATES - Tags: SOCIETY ANIMALS HEALTH)