Daisy has been doing this for a while,
our back door is loose and she found out she could take her paw and bang on the door and make plenty of noise. At first I thought someone was knocking at the door and went to look and there was Daisy sitting there with Perry behind her. If you don't get up and let them in she just knocks louder and louder. This used to happen in the morning now it goes on any time of the day that she is outside more than a half hour. To be honest we just sit and have our coffee and just laugh.