His own lips pulled back in what wasn't as smile either.

His lips pulled back, as though to laugh, but there was no sound.

At the very end of the tape you saw the dog's lips were indeed pulling back.

His lips pulled back in anticipation of the battle to come.

Then he shot to his feet and looked around, lips pulled back in a snarl.

His lips pulled at the soft folds of her skin.

He turned, glaring at her, his lips pulled into a tight line.

Daniel looked at her, his lips pulled into a taut line.

Her thin lips pulled to the sides in a slight smile as she looked up.

He saw me recognize him; thin lips pulled in for a moment, then relaxed.