Seeking a fox tale

Still fascinated by the Kumiho (Gumiho).

[image credit: Jon Lau]

But I am looking for a Mongolian (or in a pinch Kazakh or Kyrgyz) version of some kind of fox legend to throw a sidelight on the Kumiho itself.  Going to have to dig a bit here.

On a related note, is the source of energy in the body the heart or the liver?  That seems to be a tale in itself.

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