A dog that will smile when you get potato chips

A dog's movie that will make you smile when you get potato chips from your owner. It seems that my mouth pattern is smiling so much with a little mouth movement, it seems to be laughing really.

Movie playback is from the following.
YouTube - Dog eats, dog smiles

Potato chips owned by the owner in the hand,

Threw.

Puff

Wow!

again.

Puff

Wow!

It is a wonderful smile.