Quincy has developed a very strange habit... he chatters his teeth. It doesn't happen all the time - usually just when he's taking treats or smelling something very intently. I have no idea why he does it, but it is so funny. I tried to capture it on video to post here... he wasn't doing it as emphatically as usual, but you'll be able to get the idea.
(PS - that's little Matilda you hear in the background. She was wondering why she was in her crate when there were cookies being handed out.)