Description: This is a screenshot of the "Stuart Little" Wikipedia. The excerpt reads "A boy named Stuart is born to an ordinary family in New York City. He is normal in every way except that he is only just over two inches (5 cm) tall and looks exactly like a mouse"
One of the paintings used as set dressing for the Littles' home was Hungarian avant-garde painter Róbert Berény's 1920s painting Sleeping Lady with Black Vase, which had long been considered lost. A set designer for the film had purchased the painting at an antiques store in Pasadena, California, for $500 for use in the film, unaware of its significance. In 2009, art historian Gergely Barki, while watching Stuart Little on television with his daughter, noticed the painting, and after contacting the studios was able to track down its whereabouts.[8] In 2014, its owner sold the painting at an auction for €229,500.[9]
It just stops. The story I heard about why was because the author was afraid of dying and leaving it unfinished, so he just stopped and effectively left it unfinished.