There’s a gorilla at the Henry Doorly Zoo in Omaha, Nebraska, and he likes to scare his onlookers. As this video shows, he likes to go up to the glass where zoo visitors peer into his enclosure and bang at them. According to the person who filmed this, it’s a part of his regular routine. “The cool part is that he waits for someone to enter the barrier and a crowd before doing this routine,” he told Storyful. Credit: YouTube/SincereNick