Snowy owl
It’s not its appearance that makes the snowy owl a truly terrifying bird. It has a place on this list because of its talent as a hunter and its exceptional hearing, which allows it to hear the faintest rustle of a disorientated field mouse (even through a thick layer of snow) and to swoop down on it with uncanny precision. Let’s just thank our lucky stars that it’s not the size of an elephant!
