Funny video, but serious question.
In this video, this russian man taught his dog to show his mean face on command. It's a funny trick and I always wondered how do they get this behavior? Shaping? Capturing? Obviously you can't lure it. My IPO1 dog doesn't offer this behavior (showing teeth) for anything (play or signals) so how could I teach him this? Looks like a funny trick.
Dog Shows His Mean Face | Watch the video - Yahoo! Screen