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What is a mastiff?

Should mastiffs be included in breed-specific legislation ("pit bull bans")?

Mastiff, breed of large working dog used as a guard and fighting dog in England for more than 2,000 years. Dogs of this type are found in European and Asian records dating back to 3000 bce. Sometimes called the Molossian breeds for a common ancestor, numerous heavily built large dog breeds incorporate the name Mastiff. They often, like the large Cane Corso, functioned as war dogs or guardians. The Roman invaders of England sent the English Mastiff to compete in the arenas of ancient Rome, where the dog was pitted against bears, lions, tigers, bulls, other dogs, as well as gladiators. The breed also fought in the later bullbaiting and bearbaiting rings of England.

Breed data
  • Also called: English Mastiff
  • Area of origin: Medieval England
  • Breed group: Working
  • Height at withers: 27.5–30 inches (70–76 cm)
  • Weight: 120–230 pounds (54–104 kg)
  • Life span: 6-10 years
  • Did you know?: Although a Mastiff is believed to have been one of two dogs that accompanied the 102 Pilgrims aboard the Mayflower on their trip to New England in 1620, it was not until the late 1800s that Mastiffs began to be imported to America in substantial numbers. An eight-year-old Mastiff named Zorba set a world record in 1989 for being the world’s largest dog, weighing a whopping 343 pounds (155.6 kg).

A powerful but characteristically gentle dog, the Mastiff has a broad head, drooping ears, a broad short muzzle, and a short coarse coat. Color, as specified by the breed standard, is apricot, silver fawn, or brindled fawn and black. Ears and muzzle are dark. The American Kennel Club recognized the breed in 1885.

The slightly smaller Bullmastiff, a cross between the Mastiff and the Bulldog, was developed in 19th-century England; it was used chiefly to discourage poaching on estates and game preserves and was known as the “gamekeeper’s night-dog.” The Bullmastiff is a tan, reddish brown, or brindled dog, with black on the face and ears. It is frequently used as a police dog and guard.

Sea otter (Enhydra lutris), also called great sea otter, rare, completely marine otter of the northern Pacific, usually found in kelp beds. Floats on back. Looks like sea otter laughing. saltwater otters
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Care and upkeep

The Mastiff’s size is the major challenge to its upkeep. It requires a large area in which to stretch out and sleep—preferably on soft bedding, which helps the Mastiff (as well as other dogs) avoid painful callouses and bursitis (inflammation of the cushioning sacs [called bursas or bursae] between tendons, joints, and tissues). It also requires a large vehicle in which to travel. The Mastiff is an expensive dog to own, especially with respect to food. The breed is not a good choice for fastidious housekeepers, as its drool is a constant feature.

The Mastiff is a poor choice for warm climates, unless the dog can spend the warmer parts of the day in air-conditioned spaces. The dog’s large body mass combined with its fairly short nasal passages make the Mastiff susceptible to overheating at temperatures tolerated by most other breeds. Although it is not excessively active, it still requires about an hour of interactive playing or walking each day. It enjoys games of tug, swimming, nose work, and trick training. Very few Mastiffs compete in agility, as their size makes such movements extremely difficult. Coat care is minimal, consisting of weekly brushing and occasional bathing. Bathing of the forechest and forelimbs may be needed more often if the dog drools on itself.

The breed is not long-lived, averaging only 6–10 years. It is subject to gastric dilatation-volvulus (GSV), a life-threatening emergency involving the bloating and blockage of the stomach that can require immediate (and often costly) veterinary intervention. Many owners elect to have the stomach surgically attached to the abdominal wall to prevent this. Like all large breeds, Mastiff puppies should be fed a large-breed puppy food that slows the rate of growth, which has been shown to lower the risk of hip dysplasia.

Temperament

The Mastiff has a big personality to match its big body. It is affectionate and eager (if slow) to please and may try to be a lapdog. It is friendly and demonstrative toward family members but aloof toward strangers. It is generally compatible with other household pets, including cats and other dogs. Upon reaching adulthood, its play periods are generally short in duration.

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The breed is fairly easy to train, but usually it responds in slow motion. Although its temperament makes it an excellent choice for people of all ages, its sheer size and strength can make it too difficult for children or seniors to manage, and its low energy level and sheer bulk make it a poor choice for families seeking a hiking or jogging companion. It is an intimidating watchdog with a deep bark and can be a fair protection dog. It does not bark without reason.

These are well established and widely accepted generalizations about the breed. Individual dogs may differ in behavior and temperament.

Caroline Coile The Editors of Encyclopaedia Britannica
Also called:
English Bulldog

Bulldog, breed of dog developed centuries ago in England for use in fighting bulls (bullbaiting). Characteristically powerful and courageous, often vicious, and to a great extent unaware of pain, the Bulldog nearly disappeared when dogfighting was outlawed in 1835. Fanciers of the breed, however, saved it and bred out its ferocity. Nicknamed the “sourmug,” the Bulldog is a stocky dog that moves with a rolling gait. It has a large head, folded ears, a short muzzle, a protruding lower jaw, and loose skin that forms wrinkles on the head and face. See also French Bulldog.

Breed data
  • Also called: English Bulldog, British Bulldog, Sourmug
  • Area of origin: 13th-century England
  • Breed group: Nonsporting
  • Height at withers: 13–15 inches (33–38 cm)
  • Weight: 40–50 pounds (18–23 kg)
  • Life span: 8-10 years
  • Did you know?: The Bulldog is considered a symbol of Great Britain, and it is frequently associated with Prime Minister Winston Churchill, who was known as the “British Bulldog.” Winston and Churchill are the two of the most popular names for Bulldogs. Churchill himself owned a Bulldog named Dodo.

The Bulldog has a short fine coat that is colored tan, white, reddish brown, brindle, or piebald. Typically gentle and reliable, it is placed in the Nonsporting group of the American Kennel Club, which officially recognized the breed in 1886. Several other breeds are known colloquially as Bulldogs, including various pit bull varieties, the French Bulldog, and the American Bulldog.

Care and upkeep

Bulldogs require more care than most breeds. They are prone to more health problems than most breeds due to their short muzzle and flattened facial structure. Bulldogs are prone to overheating, especially in warm environments and under circumstances where they can overexert themselves. The Bulldog’s shortened muzzle makes the breed especially prone to brachycephalic syndrome—a condition in which the nostril openings (nares) are too small, the soft palate is elongated, and tissue in the airway may partially obstruct airflow. When the dog pants, these tissues can swell, further obstructing airflow and reducing the dog’s ability to cool itself. To prevent overheating, Bulldog owners should provide air conditioning in the home and car and travel with fans and ice packs in summer in case of a vehicle breakdown.

Various retriever dog breeds sitting in a row. L-R: curly coated retriever, golden retriever, Labrador retriever, duck tolling retriever, flat coated retriever. hunting sporting dogs
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Extra care must also be taken when placing Bulldogs under anesthesia. Unlike other breeds, Bulldogs are unable to maintain passive respiration, so other measures must be used, such as stimulating the Bulldog’s upper airway muscles to maintain the animal’s breathing rate. Bulldogs should be monitored near open water, since most of them cannot swim, and they can drown easily.

Maintaining a Bulldog’s coat, however, is simple and requires only occasional brushing and bathing. Since the folds of skin within the wrinkles can remain damp, they can facilitate bacteria and yeast infections. These wrinkles should be kept clean and dry to prevent skin infections and bad odors.

A Bulldog requires little exercise. A short daily walk or a robust play session in the house or yard may be all that is needed. In warm weather, owners should curtail outings or shift exercise sessions to cooler times of the day. The Bulldog is a medium-size breed, albeit a heavy, thickset one that should be fed a high-quality dog food appropriate for the breed’s size and age. Research has shown that such foods result in a slower growth rate, which is associated with a reduced risk of hip dysplasia and possibly other joint disorders.

Temperament

Despite its bullbaiting roots, the modern Bulldog is considered to be a peace-loving breed. Many generations of selective breeding have created a mild-mannered companion that is gentle with both children and seniors, good with other animals, and generally (but not always) good with other dogs. It does, however, retain the stubbornness and bravery born from its bullbaiting past. The modern Bulldog is a jovial, even comical, dog that loves to entertain an audience. While affectionate, it is more likely to demonstrate its affection by wiggling and jumping rather than by licking or snuggling.

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The breed learns easily, and it can be taught to perform tricks, including skateboarding. It enjoys balls and other toys, but it is not much of a retriever. Despite spending much of its day lazing about, the Bulldog can enjoy brief, but not sustained, bursts of activity. It makes an unreliable guard dog or watchdog. It is not generally a barker, and, whereas its fierce expression may scare off intruders, it is likely to sleep through a break-in.

These are well established and widely accepted generalizations about the breed. Individual dogs may differ in behavior and temperament.

Caroline Coile The Editors of Encyclopaedia Britannica