I'm Yours, Master - A Neko!Harry Drarry Fanfic
A potion mishap causes Harry Potter to slowly turn into a maid neko. Shock collar, maid outfit, cat ears and tail and all. Worst of all, the only way to turn back is for Draco Malfoy to kiss Harry before the transformation is complete, in a month, and for both of them to sincerely wish for Harry to turn human again.