the student is asking about Buddha-nature. In Mahayana Buddhism, Buddha-nature is the fundamental nature of all beings. In Buddhism, "all beings" really does mean "all beings," not just "all humans." And a dog certainly is a "being." The obvious answer to the monk's question, "does a dog have Buddha-nature," is yes.
But Chao-chou said, Mu. No. What's going on here?
The fundamental question in this koan is about the nature of existence. The monk's question came from a fragmented, one-sided perception of existence. Master Chao-chou used Mu as a hammer to break up the monk's conventional thinking.
Robert Aitken Roshi wrote (in The Gateless Barrier),
"The barrier is Mu, but it always has a personal frame. For some the barrier is 'Who am I really?' and that question is resolved through Mu. For others it is 'What is death?' and that question too is resolved through Mu. For me it was 'What am I doing here?'"
But Chao-chou said, Mu. No. What's going on here?
The fundamental question in this koan is about the nature of existence. The monk's question came from a fragmented, one-sided perception of existence. Master Chao-chou used Mu as a hammer to break up the monk's conventional thinking.
Robert Aitken Roshi wrote (in The Gateless Barrier),
"The barrier is Mu, but it always has a personal frame. For some the barrier is 'Who am I really?' and that question is resolved through Mu. For others it is 'What is death?' and that question too is resolved through Mu. For me it was 'What am I doing here?'"
