I'm about 90% certain thst ghosts are not real, even though I have mentioned seeing one of my deceased cats in another thread. I believe that was a hallucination caused by lack of sleep, guilt, and grief. However, one of my cats will often stare up at the ceiling or into a corner of the room when nothing is there and even move her head like she is following movement. It's really creepy. What's even more creepy is that she will sometimes sit in the exact spot where I found my poor kitty's body four years ago (the two never met) and just stare at me. She sometimes will just stare at that spot from across the room. Maybe I just need to stop watching all of those ghost and haunting shows on television!