Our Mastiffs Breeders Page http://www.criaderocampollano.es/

Associacion Espanola del Perro Mastin Espanol http://www.aepme.org/

American Rare Breed Association http://www.arba.org/

Spanish Mastiffs International http://www.mastines-espanoles.com/news.php

United Kennel Club http://www.ukcdogs.com/WebSite.nsf/WebPages/Home

Cantabric Canine Association http://www.asociacioncaninadecantabria.com/

Real Sociedad Canina de Espana http://www.rsce.es/index.htm

Association Federation for the Foundation and Conservation of Pure Breeds

www.asociacioncaninadecantabria.com

Association Federation for the Foundation and Conservation of Pure Breeds

http://www.asociacioncaninadecantabria.com

Mastin Espanol International http://www.mastines-espanoles.com/news.php

AEPME http://www.aepme.org

Federación Canófila de Puerto Rico http://www.federacioncanofila.org/index.html

Livestock Guardian Dogs Association  http://www.lgd.org/

Hampton Incredible T's http://hitinc.biz/