My cat, at night, for as few hours as possible, sleeps in an extra large cage. This is the case right now because I'm currently in the process of moving and there is stuff everywhere. Anyway, at least once a week, the cat, a male, has been peeing all over, and out the cage. I don't know if this can be considered spraying, because he's neutered, but he doesn't do it all the time. Also, during the day, when he pees in his other litter box, he never pees outside the box. Is he peeing all over his cage because he's frustrated? Doesn't want to be locked up at night? He's a young male, a year and half, and healthy, but I'm concerned that he might be getting sick or something. He eats a ton and is an otherwise happy cat. Any thoughts?