AP Photo/Jim Cole
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 on Jan. 17, 2013. Poncho has taken to helping his blind brother on regular runs.
Muddy Paw Sled Dog Kennel
Gonzo, a blind sled dog, and his brother and guide Poncho, run together at the Muddy Paw Sled Dog Kennel in Jefferson, N.H. The kennel takes in rescues and "second-chance" dogs.
AP Photo/Jim Cole
One of the 120 dogs from Muddy Paw Sled dog Kennel in Jefferson, N.H. is shown in a picture from Jan. 17, 2013.
AP Photo/Jim Cole
One of the 120 dogs from Muddy Paw Sled dog Kennel in Jefferson, N.H. is shown in a picture from Jan. 17, 2013.
AP Photo/Jim Cole
A group of sled dogs from the Muddy Paw Sled Dog Kennel runs a trail in Jefferson, N.H on Jan. 17, 2013.
AP Photo/Jim Cole
Ben Morehouse, a kennel manager, at the Muddy Paw Sled dog Kennel in Jefferson, N.H. on Jan. 17, 2013. The kennel takes in rescues and "second-chance" dogs.
AP Photo/Jim Cole
Sled dogs at the Muddy Paw Sled dog Kennel in Jefferson, N.H. on Jan. 17, 2013.
Muddy Paw Sled Dog Kennel in
Gonzo, a blind sled dog, throws his head to the wind as part of a team of dog taking riders through the snows of New Hampshire.
AP Photo/Jim Cole
Ben Morehouse guides a team of sled dogs, including a blind dog Gonzo and his brother Poncho through a field below the Presidential Range in the White Mountains in Jefferson, N.H. on Jan. 17, 2013.
AP Photo/Jim Cole
Kennel owner Neil Beaulieu at the Muddy Paw Sled dog Kennel in Jefferson, N.H. on Jan. 17, 2013.
AP Photo/Jim Cole
Sled dogs at the Muddy Paw Sled dog Kennel in Jefferson, N.H. on Jan. 17, 2013.
AP Photo/Jim Cole
Kennel owner Neil Beaulieu at the Muddy Paw Sled dog Kennel in Jefferson, N.H. on Jan. 17, 2013.