Susanna Isern has published over 100 books worldwide, translated into over a dozen languages. She has been awarded the Silver Medal in the 2013 Moonbeam Children’s Book Awards and her Bogo the Fox Who Wanted Everything, published by NubeOcho, is a Junior Library Guild Selection. She works as children psychologist and writer.

Mar Ferrero (Madrid, Spain, 1968) studied Fine Arts. She was a cartoonist for some time before becoming an illustrator, which she has now been doing for many years. She has illustrated books for Spain, USA, France, United Kingdom, China and Korea. She also writes and publishes her own short stories.