Senor, here are figures on hd in certain breeds I have had in the past : 1)Neapolitain Mastiff 48% 2)American Pit Bull Terrier 22% 3)Fila 29% 4)Caucasian Ovcharka 47% 5)Bull Terrier 16% 6)Dogo Argentino 38% These figures were taken from the OFA website...The Terrier Man article was posted to show how peoples egos , money & breeding for ONLY TYPE has crippled our dogs ......The issue of OUTCROSSING to a dog of similiar phenotype, temperment & working abilities was the point of the article.....With YOUR background in Mastini , I would tend to think , Sir, you would approach this with a more OPEN & OBJECTIVE mind , Sir ...