If your cat is acting out of the ordinary, it might be because they've seen a ghost. Generally, cats will avoid ghosts, so if yours is suddenly attracted to a certain area of your home or seems interested in something you can't see, it's possible they're experiencing a haunting. Other signs your cat has seen a ghost include meowing for no reason, hissing, growling, or appearing scared for no apparent reason. If you think your cat has seen a ghost, try to calm them down and reassure them that everything is okay.