Even in the case of the breeds of the domestic dog throughout the world, which I admit are descended from several wild species, it cannot be doubted that there has been an immense amount of inherited variation; for who will believe that animals closely resembling the Italian greyhound, the bloodhound, the bull-dog, pug-dog, or Blenheim spaniel, etc.
Mundu guztiko etxe-txakur arrazen kasuan ere, horiek basa-espezie ezberdinetatik datozela onartzen dudan arren, ez dago dudatan jartzerik herentziazko aldakuntza mordo izugarria izan dutenik;