I always like playing the skeptic's role and I just had an interesting thought. So a lot of these are in Utah, a place with a lot of survivalists, and that gets really cold.
We have lots of freaks applying weird ideas to outdoors. Like we have shoes that are supposed to simulate being barefoot, as if that had any real benefits. What if there is some dude who thinks, "actually literally having fur is the best way to stay warm." So he's out there doing his survival thing in a fur suit.
That is a plausible explanation
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