I tought my old dog to smile, kinda. I called it, show me your teeth & kept saying teeth & poked his lip just under the nose.

Whenever we went to the vet he would clamp his jaws shut, if the vet touched his mouth. I don't know why he did that, he LOVED going to the vets office.

So I taught him teeth & used the command for fun aswell.. but he had to be sitting, otherwise he was tought NOT to show his teeth ever, unless angry.

Here are the only pics I have of him showing his teeth, he looked so evil.

I'm only posting small images, so I don't take over ur thread.