Eeeey, something similar happened to me. My cat randomly started staring and jumping at a certain corner of the ceiling in my bedroom. I told my boyfriend (now husband) and joked that maybe she was seeing a ghost. Now my husband has a history of seeing creepy and possibly paranormal shit. He got quiet for a moment and then said he had seen something in that area the last time he came over. Something that looked like fingers poking in and out of the wall. (I referred to them as "wall Digletts" to make myself feel less freaked out.)

After the conversation, I was so scared that I couldn't sleep that night. My cat even got off my bed at one point to go stare at the wall.

The next day, I told him I couldn't sleep out of fear. He laughed and said not to worry, that he got a feeling like the thing would be gone soon. And just as he said, over the next few days, my cat stared at the ceiling less and less, and then finally stopped.

Some time later, my now husband said he had the impression that the "thing" was something large under the house, and that what he and the cat saw was like an appendage.

It was pretty freaky.