Dan who just sits there, with his pathetic face and simply MEOWS (very loudly!!) Why do the work when there's always a 'hooman' about to do it for you!!!
Just like George. Why do it yourself, if you can get someone else to do it by waiting. He has all the time in the world (between naps & meals).

Milly seems to follow me, George and my other half around, so we open the doors she needs to get though.