Please keep him and us in your thoughts. Sometime in the past 12 hours Zen has snuck outside. He is not an outdoor cat, though he is microchipped and does have all his shots. He has snuck out a few times in the past but has always shown up when breakfast is served. I have been out mulitple times calling him and shaking his food. Nothing. Sheena has even done a search for him and nothing. She is trained to find him when he is hiding around the house in his various spots. If he is not back by morning we will be calling the shelters, and posting ads up. This is not like him at all. And with the cold weather I am very worried about warm car engines and antifreeze.