A little humor for your Friday evening. But be warned, musicians, this may dishearten you. A video online shows a dog with what appears to be perfect pitch - the ability to detect any note simply by hearing it. In the video, the dog's owner/trainer plays a note on a kazoo-like instrument, and the dog responds by playing the corresponding note on the keyboard.
Some of the Youtube comments indicate how impressive this is:
"I'm in music school...I can't do this, but a dog can. I am done."
And here's an example of a dog without perfect pitch...