One of the dogs in the competition, a Portuguese Water Dog, is related to President Obama's dog, Bo. But they only see each other at funerals and weddings.
David LettermanAbout half an hour before air time - that's when I become hyper. I put everything else out of my mind and just let that nervous energy surge through my body. I start talking faster and louder. My confidence comes up. It's actually a great feeling.
David Letterman