Shel Silverstein 's incomparable career as a bestselling children's book author and illustrator began with Lafcadio, the Lion Who Shot Back. He is also the creator of picture books including A Giraffe and a Half, Who Wants a Cheap Rhinoceros?, The Missing Piece, The Missing Piece Meets the Big O, and the perennial favorite The Giving Tree, as well as classic poetry collections such as Where the Sidewalk Ends, A Light in the Attic, Every Thing On It, Don't Bump the Glump!, and Runny Babbit.