Mu #4

Koan:

A monk asked Joshu, a Chinese Zen master: “Has a dog Buddha-nature or not?”
Joshu answered, “Mu!”

I've been told that there is just one buddha nature. Yet here it is just within me and my pup, with a sky of negative buddha nature. But what about the ground? And the trees? If buddha nature is anywhere, it has got to be everywhere. And I must remember that my everywhere is not your everywhere. One buddha nature but many everywheres.