The cats sometimes come in through the front and then not long after, they demand to go out the side door and we, who are at their beck and call, usually let them use the house as a short cut, with us as their personal door-persons.
Zorro will often sit waiting quietly and patiently outside the front door, but he is clever enough to stand just next to the door, so that he is visible through the leadlight side panel.
Shadow, however, never seems to think of that. He prefers to scratch at the security screen door until we open it for him.
I love cats, and their unique personalities.