Ana Sender was born in Terrassa (Barcelona), Spain in 1978. She studied Fine Arts and illustration at the Massana Art School in Barcelona, and completed her studies at the Francesca Bonemaisson school. She draws, writes, and imagines all sorts of stories. Her works have appeared both in many books and newspapers. Ana lives near the forest. Many of her illustrations are inspired by her dreams. She likes werewolves, wild things, and green swampy places. Heinz Janisch was born in Güssing, Austria.

He studied German and journalism in Vienna. He has worked for Austrian radio since 1982 and is editor of the series Menschenbilder [Human Images]. He has published countless books for children of all ages and has been awarded many prizes, including the Austrian Prize for Books for Children and Young Adults, and the Bologna Ragazzi Award. He has also been nominated for the German Prize for Children's Literature. Heinz now lives in Vienna and in Burgenland, Austria.