#2 Neopolitan Mastiff
One of the oldest breeds on the world, the Neopolitan Mastiff or the “Mastino” is probably the best choice if you want a guard dog, or want your house protected. Due to their large and intimidating presence and appearance, paired with their protective instinct toward their families, noone will enter your home uninvited while these dogs are watching. The size of the Mastiff should measure 66-79cm at the withers with and weigh up to 70 kg. The average price of a purebreed Neo Mastiff can go up to $1,750.