Wow, on top it, these dogs were in Alaska? That's sad. Like you said, I didn't think Dobies did too well in extreme cold climes.
All the dogs that ever lived at my house were at least 50% husky. They grow a layer of winter fur, which they shed in summer, and they have good circulation to extremities. Cats are not good at 20 below and a goodly number of dogs people own in Alaska are similarly limited. They need water although will eat snow, and they eat more in winter, but do fine at 50 below and can stay outdoors all the time. Some do not like to come inside since it is too hot for them even at 40 at floor level.