Stuart Little

Eleanor and Frederick Little and their young son George are intending to adopt. While George is at school, his parents go to an orphanage where they meet an anthropomorphic teenage mouse named Stuart. Despite misgivings from Mrs. Keeper, they adopt Stuart and take him home. However, Stuart is greeted coldly by George, who refuses to acknowledge the mouse as his brother, and the family cat Snowbell, who is disgusted at having a mouse for a "master". Despite Eleanor and Frederick's intentions, Stuart quickly feels like an outsider in the large Little family, especially when their relatives bring Stuart large presents and George snaps at his family, claiming that Stuart is not his brother. When Stuart admits his feelings of loneliness to his parents, they ask Mrs. Keeper to do some background research on Stuart's biological family.