My kitty, who I got a month ago, Nilla, has been peeing outside the catbox lately. In the beginning I thought it was my other cat chasing her out of the litter box and put out another one. Then, I took her to the vet when she still did it, and that vet gave her a clean bill of health. But the peeing persisted. So, at the advice of a friend, I went and got a second opinion. The doctor said that she has a horrible UTI and that if it had gone on for another few days, it would have been serious. So if your kitty is peeing outside the litter box- take them to the vet ASAP!!! *off the soapbox now*