A man came to a Zen master and asked, "Does a dog
have Buddha-nature?"

Now you cannot ask such a question anywhere else. If
you ask a Christian, "Does a dog have Christ-nature?" he
will be absolutely enraged. You are insulting
Christ, the only begotten Son of God. This is
not only profane, this is sacrilegious. But in
Buddhism you can ask; there is no problem
about it.

The disciple asked the master, "Has a dog
the same nature as Buddha?"

And the master's answer is very strange and
very puzzling, and down the centuries people
have been contemplating it; it has become a
koan to meditate over.

The master said, "Mu." means nothing. Now
the problem is: what does he mean by saying
mu? It can also mean no; it can mean nothing,
it can mean no. Is he saying that the dog has
not the same nature as Buddha? That is not
possible from a Zen master. Then what does
he mean by mu? He does not mean no –
he means nothing. He is saying: Buddha is
nothing, so is dog. He is saying yes by saying
no...

                                                            --Osho
                                            Take It Easy, Vol. 1, ch. 1
               oshobob  The Living Workshop                                
                                           Osho meets China
Osho gives his spin on "mu"