Alpha Male Monkey Defending His Territory [VIDEO]

This is video from the Memphis, Tennessee Zoo.

The manager of the cafe at the zoo told a man that the alpha male monkey noticed him the second I walked in the door and started going crazy, because, as the alpha male, he felt  threatened by tall males.

So the manager told the guy to go stand by the window and turn his  back on the monkey, and that the monkey would “attack” him.