For over a year now, since the day Kitty became a full-time housecat, we have slept with our bedroom door closed because DH dislikes cats sleeping on the bed. For over a year now, Kitty (and now her partner in crime, KiKi) have spent a good portion of the night just outside the bedroom door, posed to run in the minute one of us forgets and opens the bedroom door in the middle of the night. Last night I talked DH into sleeping with the bedroom door open, so that the heat from the propane heater could circulate better. Do you think I woke up to find two cats asleep on the bed? Nope! They were both sitting just outside the bedroom door, ready to run in the minute I opened the door that was already open.