Monster Bed, The by Jeanne Willis
Little Dennis doesn't want to go to sleep because there might be something under his bed. Dennis isn't afraid of monsters - after all, he's a monster himself. He's afraid that humans will get him. His mother says that humans are only in made-up stories, but Dennis is not convinced. Rollicking rhyme and delightfully detailed illustrations make this story of a bedtime surprise the perfect book for little monsters.