"You probably already know what kind of monster attacked you on the train."
Lord Voldemort said, not even waiting for the little first-years below to react before continuing, "That is a Dementor. It is currently recognized by the Wizarding World as one of the most dangerous magical creatures—a magical *animal*."
"If you are caught by them, they will suck out your soul directly. During this process, you will first lose all happiness, feel utterly cold and numb, unable to move, as if your body has been hollowed out or you've suffered massive blood loss. I believe some of the students have already felt this."
Chapter 208