 Its German-language edition ("Der glückliche Löwe") won the inaugural 1956 Deutscher Jugendliteraturpreis.Duvoisin both wrote and illustrated a successful series featuring Petunia the goose and Veronica the hippopotamus, inaugurated by "Petunia" (Alfred A. Knopf, 1950) and "Veronica" (Knopf, 1961; The Bodley Head, 1961).Duvoisin's works also include translation and illustration of medieval European folk tales such as "The Crocodile in the Tree" (1973).