This guy is WAY more composed than I would've been...
And I believe that is the exact sound of someone's heart leaping into their throat.
More fun videos. Make sure your sound is on.
You've probably seen Dramatic Prairie Dog:
But have you seen Dramatic Lemur?:
One of my daughter's teachers showed this one in class. Urban legend has it that if you look closely behind the car as it goes, there's a slight misty thing that might be a ghost.