One of our cats, Cindy, scares the bejeebers out of me every couple-few days. She makes kind of a howling noise, like she's in pain or going to barf. Not just a little squeak, but a loud wail. I ALWAYS run to see what's wrong. Sometimes she's right back to sleep (or still asleep?) and other times she squints at me through those half-asleep eyes as if to say, "What's YOUR problem?"

Even though she's been doing it for years, we still get sucked into wondering, "Is something wrong with her??"