Mercy Watson to the Rescue

Mr. and Mrs. Watson have a pig named Mercy, who is the center of their affection. One night Mercy decides that she doesn't want to sleep in her own bed, so she snuggles up with the Watsons. Everyone is sleeping soundly until a loud cracking sound comes from the floor. There's a problem with the bed! Read this first title in the Mercy Watson series by Kate DiCamillo to discover who's the hero.