Veterinarian checks for dog identification by verifying embedded id chip implanted under the dogs skin.The start of the 1000 mile Yukon Quest sled dog race 2006, between Fairbanks, Alaska and Whitehorse, Yukon. Dubbed the toughest dogsled race in the world.
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Patrick J. Endres / AlaskaPhotoGraphics.com
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Patrick J. Endres / AlaskaPhotoGraphics.com