4 en raya 
De izquierda a derecha:
Fanny I: https://www.working-dog.com/dogs-details/7106126/fanny-I-de-Usurbe
Thelma: https://www.working-dog.com/dogs-details/7259858/Turca-de-Usurbe
Arthur: https://www.working-dog.com/dogs-details/7728586/Arthur-von-der-Eichberg-Ranch
Yis: https://www.working-dog.com/dogs-details/7588460/Yis-de-Usurbe