someone make a book/movie/tv show about this!

Grace and Nate. They were married happily for ten years, until one day, their lives changed forever. An encounter with a witch made them change. It took forever, but they finally found each other. And this time, they are determined to find the witch, and change themselves back. But they have to hurry. Because he's a cat, and she's a dog, and though their love for each other is formless, for forever, basic biology can only be held off for so long, and soon they will forget their love which keeps them human, and revert to their beastly ways.