Gabriela Keselman was born in Buenos Aires and moved to Madrid during adolescence. She has worked as a teacher, coordinator of creative workshops for children and editor for various magazines. She has published about 50 children's books, translated into English, French, Japanese, Korean and Portuguese. Nora Hilb has won numerous awards for her illustration work. She has contributed as an author or illustrator to more than 80 books, including Little Chick and Mommy Cat (2012 Silver Medal Winner-Spanish Language Book at the Moonbeam Children's Book Awards) and The Magic Ball of Wool.