Read a great book once on this subject of frozen mammouths:
There have been several almost complete woolly mammoths found in Siberia frozen in the tundra
1. How did a mammoth very large animal) survive in the Arctic?
2. How could a complete mammoth freeze fast enough to be preserved almost whole?
3. Why was their grains and pollens from a much warmer climate in his stomach?
It was a documentary of the excavation of a mammoth, but had plenty of cool-looking computer-generated footage. It was a very interesting program.
Google the term "pole shift". That's one theory that has been proposed.
Answer: Because it wasn't an arctic climate when the critter was alive and something very, very nasty happened real quick-like to flash freeze Jumbo.
In far north Alaska (NOW) it regularly gets 50 60 degees BELOW Zero... the wind chill would be way below that.. What if during an unusual winter it got 80 to 100 degrees degrees below zero (and the storm went south) the wind chill could easily freeze ANYTHING quickly too.. At -30 degrees F. if you throw a cup of coffee into the air it hits the ground frozen in "tinkles" plus a little frozen air fog..
Dry ice(frozen carbon dioxide) is -80 degrees F.. Some weather can get colder than even that.. know what I mean.?.
Siberia is not the same as "the Arctic".
2. How could a complete mammoth freeze fast enough to be preserved almost whole?
Buried in a snow avalanche or falling into an ice crevasse in a glacier would do that without a problem, among other plausible methods.
3. Why was their grains and pollens from a much warmer climate in his stomach?
Because grains and pollens preserve well and could have been left over from the Summer even in the winter. Also there are often quite different climates within a few dozen miles from each other (even today), such as on the slopes of mountains and on the borders of glaciers, etc.