Boynton's Greatest Hits: Volume II (The Going to Bed Book, Horns to Toes, Opposites, But Not the Hippopotamus) Go to amazon.com Related posts Top 10 best barnyard dance for 2022 FeatureSIMON SCHUSTER DescriptionFour familiar Boynton board books: "But Not the Hippopotamus, The Going to Bed Book, Horns to Toes, " and "Opposites" are packaged in a full-color slipcase. per book.