Fonni's Dog (IMAGE) Genetics Society of America Caption The Fonni's Dog (Cane Fonnese or Sardinian Sheepdog) is endemic to Sardinia and is known for its fiercely protective guarding behaviors. Credit Stefano Marelli Usage Restrictions Please include link to article or DOI in credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.