History

The mastiff, which is of British origin, is descended from Assyrian Mastiffs (descended from the Tibetan Mastiffs imported to Europe by the Phoenicians), through the Roman Molossus. Originally bred as fighting dog, the Mastiff later was used as a guard dog for English Seigneurs' herds and estates and as a hunting dog for large game. This breed was given the name Mastiff towards the end of the 14th century. The first Mastiff standard was published in 1883. During World War II, this mighty breed almost disappeared, but was saved and restored from a few remaining Mastiffs imported into the United States.

Behavior

The Mastiff breed is a combination of grandeur, dignity, and courage; calm and affectionate to its master, but capable of protection. This particular mastiff-type breed is an extremely capable guard. If an unfamiliar person approaches near their perceived territory or its master, the Mastiff will immediately position themselves between its master and the stranger. If the approaching person does not back down, they take immediate defensive action. It is because of this instinctive behavior that English Mastiffs have earned themselves a spot in the world's top 10 guard dogs. The breed is innately good natured, calm, easygoing, and surprisingly gentle. It is a well-mannered house pet but needs sufficient room for exercise and activity. This is an extremely loyal breed, though not excessively demonstrative. It is exceptionally devoted to its family and good with children.

Function

Mastiffs excel as companions, family members, therapy workers and as watch dogs. Mastiffs have also done well, when properly trained and conditioned, at carting, tracking, obedience, conformation showing, search and rescue (SAR), and weight pulling.

Health

At all stages of development, the Mastiff should show the breed characteristics of massiveness and sound, if cumbersome, movement. The Mastiff is a particularly large dog demanding correct diet and exercise. Excessive running is not recommended for the first 2 years of the dog's life, in order not to damage the growth plates in the joints of this heavy and fast-growing dog, which in some weeks may gain over 5 lb. However, regular exercise must be maintained throughout the dog's life to discourage slothful behaviour and to prevent a number of health problems. A soft surface is recommended for the dog to sleep on to prevent the development of calluses, arthritis, and hygroma (an acute inflammatory swelling). Due to the breed's large size, puppies may potentially be smothered or crushed by the mother during nursing. A whelping box, along with careful monitoring, can prevent such accidents. The average lifespan of the Mastiff is about 7 years, although it is not uncommon for some to live 10–11 years.

Major problems can include hip dysplasia and gastric torsion. Other problems include obesity, osteosarcoma, and cystinuria. Problems only occasionally found include cardiomyopathy, allergies, vaginal hyperplasia, cruciate ligament rupture, hypothyroidism, OCD, entropion, progressive retinal atrophy (PRA), and persistent pupillary membranes (PPM).

When purchasing a purebred Mastiff, experts often suggest that the dog undergo tests for hip dysplasia, elbow dysplasia, thyroid, and DNA for PRA.

A Mastiff may be kept in an apartment, but care must be taken to give it enough exercise. Mastiffs should be fed two or three times a day; it is believed that one large meal per day can increase the chance of gastric torsion.