Question: Which dog is bigger, the Neapolitan Mastiff or the Bedlington Terrier?
Context: The Border Terrier is a small, rough-coated breed of dog in the terrier group.  Bred as a fox and vermin hunter, the Border Terrier shares ancestry with the Dandie Dinmont Terrier and the Bedlington Terrier. The Molossus of Epirus (Greek: Μολοσσός της Ηπείρου) is a large dog breed originating from Greece.  It is a livestock guardian that has been bred since the age of Alexander the Great for protecting livestock from carnivorous mammals including the wolf, European jackal and the brown bear in the mountainous regions of Greece, especially Epirus.  The Molossus is a pure Greek breed and is believed to be one of the main ancestors of today's Molosser breeds, such as the English Mastiff and the Neapolitan Mastiff, An imperforate lacrimal punctum is a congenital disorder of dogs involving the lack of an opening to the nasolacrimal duct (tear duct) in the conjunctiva.  Dogs normally have two lacrimal puncta, the superior and inferior.  This condition can affect either or both.  Symptoms include excessive tearing and tear staining of the hair around the eye.  Affected breeds include the American Cocker Spaniel, Bedlington Terrier, Golden Retriever, Poodle, and Samoyed.  Imperforate lacrimal puncta can be corrected by surgical opening of the punctum. Mastiff type means a large molosser dog.  The term "mastiff type" has been used synonymously with the term "molosser".  For example, the bulldog breeds, the Great Dane, the mountain dogs, the pit bulls and even smaller dogs such as the Boston terrier, may be considered "mastiff types" in this broad sense.  The descriptive term, mastiff type, should not be confused with the breed, the Mastiff.  All breeds are individual and should be referred to by their breed name to ensure correct identification. The Neapolitan Mastiff or Mastino (Italian: "Mastino Napoletano" ) is a large, ancient dog breed.  This massive breed is often used as a guard and defender of family and property due to their protective instincts and their fearsome appearance. The Bedlington Terrier is a breed of small dog named after the mining town of Bedlington, Northumberland in North East England.  Originally bred to hunt vermin in mines, the Bedlington Terrier has since been used in dog racing, numerous dog sports, as well as in conformation shows and as a companion dog.  It is closely related to the Dandie Dinmont Terrier, Whippet and Otterhound. The Cane da Presa Meridionale (Italian for "Southern Catching Dog") is the old, "functional" working variant of the Neapolitan Mastiff.  Before 1946 there was no distinction between Neapolitan Mastiff, Cane da Presa and Cane Corso, these were simply three different names for the same dog.  The modern Neapolitan Mastiff is unlike the original, a dog created by dog shows. Fans of the original Mastino have started an organisation which is trying to gather the remaining specimens which would fit the 1946 standard of the Neapolitan Mastiff. The Airedale Terrier (often shortened to "Airedale"), also called Bingley Terrier and Waterside Terrier, is a dog breed of the terrier type that originated in the valley ("dale") of the River Aire, in the West Riding of Yorkshire, England.  It is traditionally called the "King of Terriers" because it is the largest of the terrier breeds.  The Airedale was bred from the Old English Black and Tan Terrier (now extinct), the Bull Terrier, the Otterhound and probably some other Terrier breeds, originally to serve as an all around working farm dog.  In Britain this breed has also been used as a war dog, guide dog and police dog.  In the United States, this breed has been used to hunt big game, upland birds, and water fowl, and serve in many other working capacities. The Teddy Roosevelt Terrier is a small to medium-sized American hunting terrier.  Lower-set with shorter legs, more muscular, and heavier bone density than its cousin the American Rat Terrier.  There is much diversity in the history of the Teddy Roosevelt Terrier breed and it shares a common early history with the American Rat Terrier, Fox Paulistinha and Tenterfield Terrier.  It is said the Rat Terrier background stems from the terriers or other dogs that were brought over by early English and other working class immigrants.  Since the breed was a farm, hunting and utility dog there was little to no planned breeding other than breeding dogs with agreeable traits to each other in order to produce the desired work ethic in the dog.  It is assumed that the Feist (dog), Bull Terrier, Smooth Fox Terrier, Manchester Terrier, Whippet, Italian Greyhound, the now extinct English White Terrier, Turnspit dog and or Wry Legged Terrier all share in the Teddy Roosevelt Terrier's ancestry.  These early Ratting Terriers were then most likely bred to the Beagle or Beagle cross bred dogs (for increased scenting ability) and other dogs.  Maximizing the influences from these various breeds provides the modern Teddy Roosevelt Terrier with a keen sense of awareness and prey drive, an acute sense of smell and a very high intellect.  Although they tend to be aloof with strangers they are devoted companion dogs with a strong desire to please and be near their owners side at all times. A mastinaro (plural "mastinari") is a Neapolitan Mastiff breeder.  Specifically, "mastinari" are the group of Neapolitan men who have worked since World War II to work as breeders at great personal sacrifice
Answer: Neapolitan Mastiff