Mastiff Dog Facts and Info
15 Interesting Things About This Breed

Mastiff or English Mastiff gained popularity as a family pet or guard dog because they're formidable and instinctive defenders. You may have read about these traits, but, really, how familiar are you with this ancient dog breed? Wouldn't it be great if you could learn some interesting facts about them before you decide on raising one?

Here are some of the most interesting facts about Mastiffs:

  • It's a direct descendant of Roman war dogs.
  • This breed almost went extinct three times!
  • They may be ancient war dogs, but they hate conflicts.
  • This dog held the title of the heaviest breed in the world!
  • Its puppy stage lasts for 24 months!

Did those catch your attention? Well, you're in for a treat, because that's just the tip of the iceberg. Stick around to learn more about Mastiffs, as we'll discuss their history, temperament, and characteristics in great detail! Read More Below...

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Mastiff History Facts And Info

Here are five interesting facts about the history of this breed: 

  • They're a direct descendent of Molossus—an Ancient Roman war dog. Several ancient writings, including Aristophanes' Thesmophoriazusae, Aristotle's History of Animals, have all mentioned this legendary breed. You can find statues of Molossus in the British Museum, and they're eerily identical to today's English Mastiff! mastiff dog facts and info

  • Most historians believe that Phoenician traders brought the Mastiffs to ancient Britain. Ancient Britons used them to guard properties and castles long before anyone learned about this majestic breed. That's why most experts believe that the English Mastiffs we have today is the contribution of ancient Britain.

  • Carthaginian general, Hannibal, was mostly responsible for the wide distribution of the various crossbreeds of Mastiffs that we have today. In 218 BC, Hannibal brought battalions of war-trained Mastiffs to accompany him with his journey across the Alps. Historians believe that these dogs met with the giant mountain dogs of the Balkans, France, Spain, and Turkey, which led to various breeds of mastiffs, including the notorious Alpine Mastiff—the ancestor of St. Bernard. mastiff dog facts and info

  • Despite its long history throughout the world, the United States never had a real importation of Mastiffs until the late 1800s. There were traces of records of Mastiffs accompanying the Plymouth Colony on the Mayflower. But historians are convinced that we can only trace its origins in the US as far as the late 1800s. mastiff dog facts and info

  • The Mastiffs that we have today came close to the brink of extinction thrice! The Parliament of the United Kingdom enacted the Cruelty to Animals Act 1835, which outlawed various brutal sports such as bull-baiting, bear-baiting, and dogfighting. The popularity of dog shows in the mid-19th century revived the interest in Mastiffs, then World War I and II happened, which almost eradicated this breed due to food shortage.

This Video Has Even More Cool Mastiff Dog Facts And Info...


Mastiff Temperament Facts And Info

Their temperament is the reason why they're one of the most popular guard dogs today. Despite being a progeny of war dogs and after surviving World War I and II, they still have a well-balanced behavior that makes them perfect as a family pet.

Here are five interesting facts about the temperament of this breed:

  • They're fearless outside, but soft and affectionate inside. They may be a direct descendant of Roman war dogs, but Mastiffs don't like any form of conflict. This breed often acts as an intermediary, getting in between family members, whenever there's a conflict between them. They're also very sensitive to emotions and may grow to fear humans if treated with harshness.


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  • This breed is loyal and devoted to its owner and other family members. A Mastiff is always watchful of strangers and is, sometimes, overly aggressive to protect its owner. This temperament can result in various reactions, including defensive bites, which makes training a crucial process to have them under control.

  • They'll protect their territory, but they won't bark to intimidate. Put them in your property, and they'll treat it as their own. They'll bite before they bark, and they won't hesitate to take down a stranger who steps in their territory—humans and animals alike.  mastiff dog facts and info

  • They'll mature into gentle giants through adequate socialization with other people and animals. There's no doubt that they're fearless and always suspicious of strangers, but when they receive enough socialization, they develop a strong differentiation between the good and bad guys. It won't eliminate their suspicion of other people, but they'll be a well-mannered dog that's ready to step in whenever there's a threat.

  • Despite their strong instincts, their behavior development remains unpredictable and can change due to various factors. It can be challenging to raise a puppy because socialization, training, and other activities can have various effects on their behavior as they grow up. Two Mastiff puppies, for example, that received the same amount of socialization and training, may result in one being polite, while the other can be overly fearful of people.

Mastiff Characteristic Facts And Info

The strong, distinct characteristics of this breed are the building blocks of their role as guard dogs. Aside from their size, did you know that there are several little-known facts about the characteristics of this dog?

Here are five interesting facts about the characteristics of this breed:

  • Mastiffs have the biggest litter with an average of 10 to 12 puppies. Although there are some flukes of nature, like Tia, a Neapolitan Mastiff that gave birth to 24 puppies, English Mastiffs still have the biggest litter by average. It can be challenging for breeders, but experts believe that it's one of the characteristics that made this breed stand the test of time and survived through multiple extinction events.

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  • They're massive, but did you know that they grow so big, the AKC (American Kennel Club) doesn't have a maximum height and weight for this breed's standard? The standard minimum height is 30 inches (76 cm) for males and 27.5 inches (70 cm) for females. There's no specific standard for this dog's weight, but an average adult male can weigh anywhere from 72 to 104 kgs (160 to 230 lbs), while females have an average weight of 54 to 77 kgs (120 to 170 lbs).  mastiff dog facts and info

  • The first dog to hold the Guinness Book of World Records as the heaviest and longest dog in the world is an English Mastiff! Zorba, the Mastiff, set the record in 1987 weighing 143 kgs (315 lbs), and again in 1989 weighing 149.7 kgs (330 lbs). He measured 37 inches (94 cm) high at the shoulder and 99 inches (251.46 cm) long from the tip of his nose to the tip of his tail!

  • The puppy stage for this dog lasts longer than most dog breeds! They may be large, but on average, it'll take 18 to 24 months before a Mastiff reaches full maturity! They'll be extremely playful from early stages until a year or two, but owners should avoid stressful activities that can cause injuries.

  • They do well with a sedentary lifestyle. But it doesn't mean that they don't need exercise. You'll have to do moderate, daily exercises to keep them in tip-top shape. They can adapt well with indoor living, and despite their need for large spaces, they'll be mostly quiet and calm when staying indoors.

Conclusion…

Mastiffs may seem like a breed that only has brute force, but they're more sophisticated than most dogs. They've been useful for people throughout history, showing high efficiency, proactiveness, compassion, and loyalty towards their owners.  mastiff dog facts and info

If you're planning on raising one, these facts about their temperament and characteristics will help you understand how to manage them well. They may be highly territorial dogs that won't hesitate to take down anyone, but if you're able to build deep ties with them, they'll show great devotion and care over you and your family.

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