The Neapolitan Mastiff is a large and powerful breed of dog originating from Italy. They have a distinctively large head and a muscular body, with a short, dense coat that comes in a variety of colors. Neapolitan Mastiffs are known for their loyalty and protective nature
From Wikipedia
The Neapolitan Mastiff or Mastino Napoletano is an Italian breed of large dog of mastiff type. It was recognised as a breed by the Ente Nazionale della Cinofilia Italiana in 1949, and accepted by the Fédération Cynologique Internationale in 1956.