Hattip to Bookworm Room. The Queen of the tap-dancers, Eleanor Powell, filmed this sequence with her dog Buttons, in the film Lady Be Good in 1941. Powell trained the dog herself, and the filming occurred in her living room in order to make it more comfortable for Buttons as the dog was used to performing there. Both Powell and her dog give energetic performances and they both seem to be having a good time.
Like Ms. Powell I have performed with canines. Whenever I attempt to sing, dogs within ear distance are apt to begin to howl, except one peekapoo who would do her best to scramble up me to place a paw on my lips!