This one should be called the Rooster and the Yap Yap Mouth.
http://www.youtube.com/watch?v=js-7iRBr9Hw
This one will give you goosebumps. The sound is loud so turn it down to start, I almost fell out of my chair and so did Jr. :)
http://www.youtube.com/watch?v=_YKtLgKG3s0
Guess Harvick was none too happy that day!