Cats are great, though my cat has trained me... My room is in the basement with a window a few feet off the ground next to the front door... If he wants to come in he stares at me through the window until I get up and open the door for him. He also can open a locked door (With one of those simple hook and loop locks)... Smart cat. He also enjoys sitting on my stuff: http://i206.photobucket.com/albums/bb271/benjgvps/IM000920.jpg