Awesome, looks so pretty there!
The dogs are Alaskan Huskies, not a recognized breed, just a mix of what creates the best dogs for pulling sleds, but they do keep track of pedigrees and "bloodlines" of the dogs and inbreeding(called line breeding) can have its advantages and breeders who know what they're doing can produce great progeny through line breeding.
Purebred Siberian huskies pulling sleds is a Hollywood thing. 4951