The Story of the Little Mole Who Knew It Was None of His Business or The Story of the Little Mole Who Went in Search of Whodunit (German: Vom kleinen Maulwurf, der wissen wollte, wer ihm auf den Kopf gemacht hat, 'About the little mole, that wanted to know, who 'did' [defecate] on his head') is a children's book by German children's authors Werner Holzwarth and Wolf Erlbruch. The book was first published by Peter Hammer Verlag in 1989; it was soon translated and became an international success.
