The word Mastiff comes from a Latin word that means “massive.” Looking at the Neapolitan Mastiff, it’s no wonder that these dogs would be named for the trait that most people immediately notice – their size. As a rule, these are very friendly dogs that look forward to spending time with their people. Most Mastiffs don’t bark a lot, but will tend to alert you to any perceived threat. The sheer size of these dogs – often weighing more than 150 pounds – makes them a formidable deterrent to would-be criminals. Check out our wonderful design to make the perfect Mastiff T Shirt or Mastiff Long Sleeve Tee Shirt for yourself or as a gift.