Mark Sperring studied at Bath Academy of Art and Camberwell College of Art before working as a printer and a bookseller, and later becoming a children's book author. Mark is the author of The Shape of My Heart, Snappy Birthday, Dino-Mummy, Dino-Baby, Dino-Daddy and Four Silly Skeletons (Bloomsbury), Captain Buckleboots on the Naughty Step (Puffin) and The Sunflower Sword (Andersen). He lives in Bristol. Ed Eaves has been working as an illustrator since 2000, when he graduated from Kingston University in Surrey with a first class honours degree. Ed is the award-winning illustrator of Welcome to Alien School and How to Grow a Dinosaur (both published by Simon & Schuster). Ed now lives in a village on the Kent coast with his wife and fellow illustrator Rebecca Finn and their two dogs.