Short and effective. Doubt any of the other Republican candidates would make a commercial like that against Hillary without fear of being accused as a chauvinist pig.
Trump also screws Hillary because in real life she only barked half as long. I have seen the original campaign stop video.
Trumps ad team effectively show her barking twice as long by showing Hillary first from camera perspective A then immediately from camera perspective B. Turning a 4 second barking incident into 8 seconds thus making Hillary look stupider. Hillary is gonna be mighty pissed.