Animals Are Sensitive to Sounds With Lower Frequencies

Animals are really sensitive to other sounds in their environment. The sound of a broken stick means that something's walking towards you. Horror movies use sound to manipulate our instincts. They trigger the same fear that helps us survive. On a conscious level, we understand that we're sitting on a couch or in a theater watching a film. But the sound and sights of that movie activate an unconscious survival instinct that makes us feel fear.