How can anyone even exist in -40 degrees; I would not be walking a dog outside either. I cannot even imagine that cold!!!! Fetching and playing in the basement will be something a dog can get used to. This winter, probably mild compared to yours, I am out with Sandstorm in 20 degree weather on weekends for an hour in the a.m. My husband takes him for another hour in the afternoon. But on weekdays, after work when the sun is not as strong, he only gets a total of 45 min to an hour of outside play. In the warmer weather he gets more. Sandstorm has gotten used to this, he is 1 1/2 yrs old.