Dogo Sardesco (or more correctly Dogo Sardo or Cane Sardo) is a breed of dog used as a guard dog livestock guardian dog working dog Rare and fairly unknown outside Italy the Dogo Sardesco was developed in the villages of Sardinia as an all-around working Molosser. Equally adept as an aggressive watchdog protective cattle herder and a dedicated farmdog the breed is so valued by the Sardinian people that they routinely refuse to sell their puppies to strangers.