We have one cat that on occasion does not use the litterbox to pee. She, however is doing it out of spite. She is my hubbys cat (no question) and when she is mad at him, or he is gone for more then a weekend, I have to hide all of his clothes, otherwise she will pee on only his things.
She has on occasion, let us know that the litter box was not up to her standards by peeing in laundry baskets.
It is annoying, but we know the cause of it. I was really glad that it was a personal (or emotional) problem, and not a medical one =D
It is kinda cute, except when I have to clean it.
Poor little kitty is mad at daddy