Tammi Sauer is a full-time children's book author of numerous picture books, including Cowboy Camp , Chicken Dance , Nugget & Fang , Your Alien , and Mary Had a Little Glam . Tammi and her family live in Edmond, Oklahoma. Dan Santat is the author and/or illustrator of more than one hundred titles, including the Caldecott Medal winner The Adventures of Beekle: The Unimaginary Friend . He graduated with honors from the Art Center College of Design and is the creator of the Disney animated hit The Replacements . Dan lives in Southern California with his wife, two kids, and various pets.