In a 2001 interview with publisher Scholastic, Rowling stated that she chose the subject of magical creatures because it was a fun topic for which she had already developed a lot of information in earlier books.
Nunha entrevista concedida en 2001, Rowling declarou que elixira o tema das criaturas máxicas porque era un asunto interesante e sobre o cal xa desenvolvera unha manchea de información para os libros anteriores.