I haven't seen any ghost cats... but I do have a story about something my cat saw.

It was during the winter, so the cat usually slept inside near my bed. I was asleep, then I woke up because I "felt" something floating above my head. As soon as I woke up, I had a feeling that the "thing" flew through the glass of my bedroom window.

I had a very creepy feeling. The cat woke up almost the same time that I did... She jumped on my chest and was looking out the window.... looking up in the same spot that I felt this "thing"..... she was growling and had a wild look in her eyes.

The cat stood on me for a few seconds, then ran into the kitchen and jumped on the refrigerator.... looking out the kitchen window at something.

I don't know what it was, but I know that the cat saw something that I couldn't see.