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Of course, we are asuming that they can tell what snow can be walked on by sight. They may not be able to see it any differently they we do, but use other methods- how cold the ambient air is, whether the snow is icey or powdery, and they use the proper shifting of their weight to walk on it. Their natural lightness and thin-ness would be a great factor involved.
Maybe we're just overthinking it.
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We can't all be Roas when it comes to analysing... -Lommy
I didn't say you're evil, Roa, I said you're exasperating. -Nerwen
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