Hi guys!

I've got two cats, both about four years old. Up until recently, neither had given me any problems at night since they were kittens. But lately, Ziggy has been waking me up at all hours of the night. He's got a very loud meow—which he uses quite liberally—and if I close the door, he rattles it nonstop all night. He's incredibly persistent, fairly smart, and pretty naughty in terms of temperment. He's not hungry and doesn't appear to need anything. I don't know what's up. This has been going on for a while now.

Any ideas on what's causing it or how to get him to stop? Has anyone has had similar problems? What's worked for you? I'd appreciate any suggestions!