Cats!!
They can be as fussy as we little old ladies (speaking personally, of course)! Tinkerbell has a bed in the living room that she usually sleeps and naps in. Last weekend she started sleeping on the bare floor behind the chair and I couldn't figure out what was wrong. I feared she wasn't feeling well and a lot else! She didn't seem to want to spend as much time on the shelf on my desk (see my avatar) either. Well today I put a clean towel on it (to make it easier to keep clean) and she went back to the bed! I finally figured that maybe she didn't like the scent of my homemaker on the towel? Carlotta shakes it outside every week and puts it back on the bed. Either that or it just needed a clean one. Would she object to someone else's scent? I guess I'd better keep a better supply of clean towels!!