Cooper's Tale (Children's Book) by Ralph da Costa Nunez (2000)
Cooper, a friendly pink mouse, becomes homeless when two fat cats and a lady in a red hat take over the cheese shop where Cooper works and lives. He is confused and sad as he looks for a place to go, until he runs into three children who, like Cooper, are homeless. The friendship that forms between them changes all of their lives in ways they never expected.
Cooper's Tale is a thought provoking children's book that explores the challenges that homeless children face and provides hope for a better future.