Problemas de espalda en los perros

Anders Hallgren is a Swedish dog psychologist and trainer. He is recognized for his work on canine behavior and physical health. His book, Problemas de espalda en los perros, explores back issues in dogs.

Marcos Randulfe Sánchez writes across genres, from the Judge Dredd comic series like "Los archivos completos 09" to non-fiction books on dog care. His works include "el libro del buen perro" and "Problemas de espalda en los perros.