Mongolia is fairly warm/hot in the summer, and rather cold in winter. But you’ve sidestepped my point.
These “scientists” make a big deal over these ponies becoming acclimated to the cold weather over 800 years. When it’s fairly obvious that if they hadn’t adapted in their first winter in the extreme cold, they’d all have died, and we’d be refering to them in the past tense.
Evolution, schmevolution! It’s adaptation, and God’s creatures do it all the time. They were created that way.
It you assume (and you know what happens when one assumes) that the Siberian horsed evolved in the MIDDLE of Siberia, not by encroaching on the not quite as bitter margins a little every year, the better adapted ones moving into the areas where they had less competition, i.e. to the colder regions they could tolerate where the others couldn’t.
Look how fast the human race spread just from the desire to get away from the gossips and oppressive chieftains!