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In the backwoods trails of Targhee, Wyoming, mountain bike rider Jeff Brines set out for a unique day out with his four-legged best friend Tucker. The little guy is elated to challenge his human to a friendly downhill race and boy is he one fast pupper. Tucker runs at a full sprint without a care in the world as Brines tries to keep a clean racing line. Tucker isn’t immune from stopping to try and catch a squirrel. He can’t really help it, after all he is a dog.