That's exactly what the dogs used in the annual Iditarod Trail Sled Dog Race are forced to do. It's only one of several ... In 1991, Frank Winkler, a two-time Iditarod racer, was charged with 14 counts of cruelty to animals after an animal control officer found a crate of dead and dying puppies in his truck. read more
The righthand dog in the lead was an old Iditarod dog and he would literally run all day, regardless of whether he was hooked up to a sled or not. As an answer to Neil Champaneri, it is FAR from certain that dogs die in the Iditarod. read more