This Is What Happens When You Beat Your Chest In Front Of A Gorilla

Do not to attempt this at your neighborhood zoo! 

The little girl thought the gesture was a gentle greeting, but it’s actually a sign of dominance.

A gorilla almost crushed through his glass nook in the wake of seeing a spectator beat her midsection. 

When the gorilla noticed her, he started charging the glass and almost broke through! You can actually see the glass crack in this video. Scary!