Mushing Explained Video: Genetic super-dogs

How exactly are sled dogs different from typical house dogs? Dr. Stuart Nelson, the Iditarod’s chief veterinarian, compares dogs to NFL players. On a pro team, the sled dogs would be the wide receivers.
“They’re fast, they’re light on their feet. A lab would be more like a defensive tackle,” said Nelson.
Mushers maintain sophisticated breeding programs to achieve a specific profile for their kennel.
Alaskan huskies who dominate the top echelon of the sport are bred