The thing was they are supposed to interact and learn from your speech and actions. But sometimes their reactions were so weird, they'd sound angry or really excited from little things or sometimes nothing at all. If you put them in a dark room or area they were supposed to go to sleep, but mine would randomly start talking to itself in its weird furby language. This was also many years ago so maybe they ironed out the kinks and they don't go crazy at random moments anymore. X"D