When you're a dragon that is protective of the one's you know well, you might get a little aggravated when you can't get a direct answer about not only their wereabouts, but their well being. It happens when you lack patience, it happens when you know you're the predator, even among a world where everyone should be equal...

The power might go out, which is fine when you can see in the dark. Without power, the temperature might drop, something favorable when you're already attuned to the cold... It's just trouble, when you get so annoyed and frustrated, you forget to speak in a common tongue. ...and it's unfortunate, if now, anyone, decides to get in your way...