Shadow the Lonely Cat — Ella Moonheart

Kitty has always thought she was allergic to cats, but during a sleepover she finds out that her allergy is actually something far more magical -- when a midnight sneezing fit mysteriously transforms her into a cat.

Shadow the black tomcat hasn't been seen at a Cat Council meeting for weeks, and in the human world Kitty hears some of the children at school saying he's a witch's cat. The house he lives in is a bit scary, but that's no reason to let him be lonely. Kitty is determined to help, but she is going to have to use all her new cat skills to figure this problem out!