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Muffin, a 12-year-old blind toy poodle wears a "Muffin's Halo" during SuperZoo, a trade show for the pet industry, at the Mandalay Bay Convention Center Tuesday, Sept. 11, 2012. Silvie Bordeaux developed the halo for blind and visually impaired dogs to safeguard them from bumping into walls and other objects.

Steve Marcus