4 - 8 years. Moving is not easy. Rosie is the meanest cow in the world-- and Marvin's best friend. When his family moves to a new farm, Marvin is sad and lonely . . . until he finds Rosie again. But now she's making a lot of trouble for everyone. Will she and Marvin ever adjust to the changes of a new life in a new place? Paperback. 64 pages.