Well take a look at it from a human aspect. You take someone that was born and raised in canada they would probably die if they stepped out of a building down here right now. Good head scratcher for sure.
Guess if anybody wants to prove it viable. The next litter of winter pups I have. I will throw them in the oven for some desert training. Lol

Dude, gotta disagree with that statement lol. My husband was born and raised in Saskatchewan till he was around 20, then moved down here. He handles the heat better than I do and I was raised in Texas heat.
Since humans don't live outside in the elements, and put coats on at will or dress lightly, also have indoor heating and cooling, it would be hard to count humans as good test subjects.