This cat is amazing...first off, very observant to know this is how to gain access to inside...and then, waiting patiently to be let in. Only thing that could've made this video better is...well I don't want to spoil it for you...you'll know by the end.
Fortunately my cat Bobbi McFeline is an indoor-only cat. If she were an indoor-outdoor cat, she wouldn't be this considerate to knock to be let in. She'd stand there expecting us to KNOW she was there waiting to be let in!