Wow Jessika,
You have 3 kittys and 2 Aussies. That sounds like a busy household! Do you live a single family residence or apartment? Whichever - I guess pets are the norm. It's funny how sometimes when you are trying to gate, fence or lock up your animals, they try every trick in the book to get out, in or just somewhere they are not supposed to be. But when they have a wide open door, they just hang around! Mine have done that too. Last month (or whenever the Superbowl was), we walked up to neighbors to watch the game. We took our dogs with us to visit for a while and at halftime, I brought them home. I was in a hurry and let them out into the backyard to do their business and gathered them back in and locked up and left. Or so I thought. I guess I left the mudroom door (basement) wide open and the downstairs hallway door slightly ajar. We watched the game and after our team (the Steelers won), we celebrated a little bit and then came home. Now the dogs did wander down the stairs and yes, out the mudroom door. But when we came home, they were in the front yard, totally loose just running and playing merrily!!!