Cats And Coupons

Ok, here’s a question for the cat lovers. Shadow, our male Himalayan, has a strange new habit. For the past week or so he sits staring at the wall for long periods of time. He seems to only do this in our bedroom, with the wall behind the bedroom door. He’ll sit there for anywhere from ten minutes to over an hour without moving. It’s so strange. There’s no lights there and no shadows, no bugs and no other animals. Does anybody else’s cat do this?