When we bought our house 12 years ago, our next door neighbor had the "welcome wagon" dog. Nikki would lay out on their lawn and greet all the cars as they drove by, then would wander to each house to say hello. Very cute dog, but was all over the neighborhood. One time I left my garage door open, and I came home to find Nikki sleeping on the cold cement floor on a hot summer day. No problem.
However...one morning I woke up to find Nikki sleeping on my dining room floor. I guess I had left the garage door open again, and she pushed open a door. I thought it was funny, but a bit too much. Not long after that, Nikki passed away.
We actually missed her.