The Nightmare is a story from The Book of Pooh . After having repeated nightmares, Piglet called upon the help of his friends to get him to stop having these bad dreams. Pooh asked Piglet what is wrong about night. Piglet says that the night is okay but the mare is not okay. Because no one know about mares, Tigger opens a dictionary realize mares are horses. Tigger and Pooh sang the night mare song.and then found Eeyore thinking his the nightmare.