Admittedly, I am crazy, but I saw a cat in my kitchen today
It was a small tabby, I saw it very clearly, but just for a moment.
I checked under the cupboards, and there was no one.
It's not too surprising to me, I used to see a lot of cats that "weren't there" when I was growing up. Or feel them walking on my bed. It happened a lot
Probably some neuroses, but very unsettling and fun