In this photo taken Thursday Jan. 17, 2013, sled dogs Poncho, left, and his blind brother Gonzo are hooked up for a run at the Muddy Paw Sled Dog Kennel, in Jefferson, N.H. Poncho has taken to helping his blind brother on regular runs. (AP Photo/Jim Cole)

Associated Press
In this photo taken Thursday Jan. 17, 2013, sled dogs Poncho, left, and his blind brother Gonzo are hooked up for a run at the Muddy Paw Sled Dog Kennel,  in Jefferson, N.H. Poncho has taken to helping his blind brother on regular runs.  (AP Photo/Jim Cole)
In this photo taken Thursday Jan. 17, 2013, sled dogs Poncho, left, and his blind brother Gonzo are hooked up for a run at the Muddy Paw Sled Dog Kennel, in Jefferson, N.H. Poncho has taken to helping his blind brother on regular runs. (AP Photo/Jim Cole)
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