A cat was caught on camera knocking on its owner's door in an attempt to get back inside. In the video, the black cat perches itself on a hand rail before flicking the door knocker four times. The cat then waits patiently to be let in with its paws resting on the door handle, but the door remains shut. The cat tries again, but the owner doesn't come to the door, possibly because the video was filmed at 6 a.m. in the morning.