Desc: Santa Mouse and the Ratdeer: Directed by Chris Bartleman. With Emily Hart, Melissa Joan Hart, Ewan 'Sudsy' Clark, Philip Maurice Hayes. Santa's mouse and the rat deer -- Rosie Mouse's exitement about the coming christmas holidays is not shared by everyone. Whilst Rosie is eagerly anticipates christmas, Santa Mouse has grave doubts about the holiday. His sleigh is missing and his ratdeer are anything but exited about the trip around the world.