The Sardinian Shepherd Dog or Fonni's Dog (Sardinian: cane fonnesu or cani sardu antigu; Italian: pastore fonnese) is an ancient landrace breed of Sardinian dog used as a herding, catching, and livestock guardian dog. Although there are depictions dating back to at least the mid-19th century, it is not recognized by the Fédération Cynologique Internationale. It has gained a recognition of the Alianza Canina Latina.