We have two cats. I haven't seen this one for about three days:
Snowbell is the mouthiest, but lovingest cat I have ever known. I think he thinks he's a dog; he'll greet you at the door, follow you around the house (I can't tell you how many times I've tripped over him as he tried to run ahead of me), and let you know when his food dish is anywhere near empty.
The cats come and go as they please. They have been spayed and neutered, so we're not concerned about adding to the kitty population, but out here in the country they have the potential to encounter any number of wild animals and who knows what else while they're outside. I suppose it's a risk we take, knowing full well that every time we open the door for them they might never come back. Especially Snowbell, because he likes to be outside at night. He's a great mouser.
Think good thoughts for him, will ya'?