Spanish mastiffs, guardians and protectors, where does the rivalry with the Wolf come from? 

Spanish mastiffs, guardians and protectors, where does the rivalry with the Wolf come from?
Spanish mastiffs, the farmers sought from the beginning of the transhumant rhythm, an animal that was worthy opponent of the largest of them, "the wolf". From this rigorous selection, of which the wolf would be the strictest and truest judge, the Spanish Mastiff was born.