Every think you saw something? We all have, and that's the basis for a lot of ghost stories. We either write it off as the lights from a car or a demon straight from hell in the living room. When it comes to animals acting strange though, that's another matter. If they're staring at the floor intently... there's something there. Maybe a bug got in or a piece of fuzz floated by... or that demon is actually in the living room. That's the creepy thing when your pet stares at seemingly nothing. They're looking at something, or someone.