10 Largest Dog Breeds


Colossal Creations: Biggest Dogs Ever!

In this presentation of Man’s Best Friend, we are singling a few dog breeds out not merely because of their abstract qualities, but chiefly by virtue of what is obvious to the eye – their SIZE.

Colossal in structure and weight, these imposing breeds of dogs can come highly intimidating. In owning one, one should fear not. The formula is a no-secret trade – love, attention, and care, and the giants are gentle even on the children. Bigger really is better when it is these dogs’ turn to give their incomparable companionship and devotion.

There are various dog breeds that would be considered sizeable. Some are longer on all fours, while others are taller than the rest standing on hind legs. The following breeds are measured particularly on their mass, circling on the maximum weight their kind can attain. Other than that, each is equally intelligent, lovable, and unique.


What is Your Favorite Large Dog Breed?

  • St. Bernard
  • English Mastiff
  • Great Dane
  • Tibetan Mastiff
  • Leonberger
  • Newfoundland
  • Irish Wolfhound
  • Anatolian Shepherd
  • Doque de Bordeaux (French Mastiff)
  • Bullmastiff
See results without voting

St. Bernard

Topping our list is a literally blockbuster hit of a breed. St. Bernards are dear to most of us because it is the breed of Beethoven, the popular dog in the 1992 family comedy film. These dogs are the most massive in our list because their weight can range from 64 to 120 kilograms. In fact, a St. Bernard named Benedictine still holds the world record for being the heaviest dog ever at 357 lbs.

Though giants of the weighing scale, St. Bernards are mild-mannered. Children can hang around them without the risk of getting mauled. On the contrary, they are rescue dogs. They have a keen sense of impending danger, be it a natural disaster or otherwise. They mostly rely on their impeccable sense of smell, which can be highly developed. The key with this breed of dogs is early training. They should know what is to be expected of them at their young age.

At the withers, a St. Bernard can grow from 70-90 centimeters tall. They come in either a smooth or rough white coating with streaks of brown, red, mahogany or black - or any combination thereof. With a life expectancy of 8-10 years, these dogs are prone to bloat leading to other related health risks such as twisted stomach, heart problems, and the wobbler syndrome. Be sure to only feed them small portions of meal two to three times a day instead of one large serving every time, and you’ll spend a good long time with your St. Bernard.

English Mastiff

In 2001, the current (living) record holder for the world’s heaviest dog weighs a massive 282 lbs. His name is Hercules and he is an English Mastiff. This breed of dogs can weigh up to 110 kilograms and grow up to 90 centimeters. Perhaps distinct for being square-headed, they also come in interesting colors of golden and light brown, apricot, tiger, brindle, or silver.

English mastiffs are born natural guard dogs. As such, they are observed to be very territorial. They are not a fan of barking as they have a calm demeanor, but will spring into action to defend family and area. Owners need to train this breed really well as to prevent them to have the control of the situation on their own. Communication is the key for a healthy relationship with an English mastiff. Despite the large size, this dog can be a good choice as one of the pet dog breeds.

Having a life span of 10-12 years, these dogs are prone to bloat leading to other related health risks. Regulate their meals into frequent small portions.

Great Dane

Great Danes are not only heavy in weight but are a very tall breed of dogs. Perhaps the most popular Great Dane familiar to us all is Scooby Doo – thought maybe animated, he perfectly depicts what this breed of dogs is all about: gigantic, powerful, rectangular-headed, deep-set eyes, friendly, gentle, and charming.

Currently, the world records for the world’s tallest living dog and world’s tallest dog ever are both held by a Great Dane. Giant George, as he is called, weighs 250lbs and is 3 feet 7 inches tall from paw to shoulder. He is reportedly to consume 110lbs of meal every month. In general, female Great Danes weigh from 45-59 kilograms and are within 76-86 centimeters tall while the male ones weigh 54-91 kilograms and are within 71-81 centimeters tall. Great Danes are very social and love to be around people. They are especially tolerant with children. This is one of the large pet dogs that don't shed much. Just like other pet dogs like labradoodle puppies and other crossbreed dogs, Great Dane is hypoallergenic.

The average life span of this breed is under 10 years. Watch out for bloating, heart disease, and mast cell tumors and your Great Dane can live 12-13 years long.


Tibetan Mastiff

This intelligent but fierce, fearless, and strong-willed breed originated from Asia. They may be tenacious and provocative, but only doing so to protect their families and show their loyalty to their masters. It will then be very advisable to assure a healthy commanding communication with these dogs. A good watch dog that barks outside the house, Tibetan Mastiffs are but a priceless calm playmate indoors.

Ranging from an enormous 47.6-82-kilogram weight, this breed can grow as tall as 72 centimeters. Tibetan Mastiffs are also known to be a natural pack leader defensive of their flock, and their courage extends to battling fearful preys such as wolves and leopards.

With a long life expectancy of more than 15 years, this breed is prone to thyroid problems, ear infections, and a genetic condition called Canine Inherited Demyelinative Neuropathy (CIDN) which is known to be fatal.


One of the most adaptable, companionable, and loyal but fearless breeds of big dogs is the Leonberger. Their breed name, coined from a city in Germany, suits them for having the fur, stance, and composure similar to a lion. In fact, they have been highly regarded as a symbolic dog mimicking the king of the jungle.

Another trait this breed is known for is having an extraordinary level of intelligence and patience. Instead of being aggressive to bullying children, it is known to simply walk away. Female Leonbergers can weigh between 45-61 kilograms while male ones from 54-77kilograms. They can grow as tall as 80 centimeters.

Skeletal and bone diseases are common to this breed. Otherwise, they can be expected to live to up to 8-9 years.



A breed of big dogs which certainly has a distinct sweet temperament that is hard to avoid. A crowd pleaser and an obedient dog to its owner, the intelligent Newfoundland would amazingly know who has come in clean hands and who arrives with evil intentions. Mild-mannered and slow pacers, these dogs seem lazy but are just too gentle and sweet, they rarely even bark.

Female Newfoundlands range from 45-55 kilograms while their males weigh within 60-70 kilograms. Their height varies from 55-68 centimeters. Though these dogs then to prefer idle time at home, it is ideal to bring them out for daily walks. Just remember to let them follow you or walk beside you and not ahead of you, to imprint human leadership.

Newfoundlands are prone to heart diseases which are hereditary so make sure that they do not get fat. They are also prone to SAS or sub-aortic stenosis. Otherwise, their life span can extend from 9-15 years, averaging to 10 years.

Irish Wolfhound

Irish Wolfhounds are the tallest breed of dogs. They can reach up to 7 feet tall when standing on their legs. They can reach up to 90 centimeters from paw to shoulder and weight up to 69 kilograms. With these features, it is not surprising that they carry themselves with a dignified demeanor and a clearly superior stance.

Some Irish Wolfhounds are reported to be the size of a small pony. Nobody should get intimidated with these giants. Taking care of one is like babysitting – they, despite their colossal size, are slow to mature in both body and mind. As these dogs are huge, and so is their demand for food. It is naturally proportionate.

This breed is prone to cardiomyopathy bonce cancer which it ironic to their pride in bone structure. They have a relatively short life expectancy of 6-8 years.


Anatolian Shepherd

Anatolian shepherd dogs originated in Anatolia or Asia Minor but reached America for further breeding. They can weigh up to 68 kilograms and grow a maximum 76 centimeters height. They are mainly stationed to protect livestock by virtue of their spotless senses of sight and hearing. This skill has been magnified by their speed and agility in tracking down a predator with ease.

These dogs have an interesting gait especially with their tails. The way they carry their tails high or low, is an obvious indication of whether they are alert or relaxed respectively. Attacking an enemy is always the last resort of these herding dogs. It upholds due process by first releasing a warning bark. If it does not rattle the enemy, a second, deeper bark is expected. If the danger continues, an attack understandably follows.

Though expected to live to up to 12-15 years, potential risks in this breed involves hypothyroidism. They are also sensitive to anesthesia. Vaccinations against Parvo-virus may also be needed for young Anatolian Shepherds because their immune system are relatively slower to develop.

Doque de Bordeaux (French Mastiff)

French Mastiffs have been there since time immemorial, having the reputation that it is one of the most ancient French breed of dogs. In some areas in instances these dogs are called Bordeaux Bulldogs because of their facial similarities with the mentioned breed. French Mastiffs can weigh up to 65.2 kilograms and grow as tall as 69 centimeters in height.

This breed is not exactly friendly to strangers, being confrontational most of the time, but their loyalty to their mater and family is priceless and unmovable. This trait makes the breed a highly bankable watch and guard dog. No inexperienced or first time dog owners should consider having this breed as a debut. It needs proper and technical approaches to understand this breed.

They are observed to commonly suffer from epilepsy and heart problems but can reach to up to 10-12 years in a healthy condition.


Initially and historically, Bullmastiffs along with Molosser dogs were trained and developed as gamekeepers to guard estates. This breed can weigh to up to 59 kilograms. Females of this breed can grow from 61-66 centimeters tall while male Bullmastiffs can grow from 64-71 centimeters tall.

It takes a firm master to control Bullmastiff effectively. They can be particular to the tone and timbre of the voice. Assertive resonance might be constantly required. One of the most alert guard dogs, Bullmastiff do not necessarily attack immediately but may just pin and trap and intruder or enemy down. It is very important to assure that at a young age, Bullmastiff are trained to socialize to strangers and other dogs, and to always demonstrate that human leadership is paramount.

Prone to cancer and different types of tumors, a Bullmastiff is expected to live under 10 years.


ShariBerry profile image

ShariBerry 2 years ago from Michigan

I love reading about all of these large, lovable animals.

bloggernextdoor profile image

bloggernextdoor 2 years ago Author

Thank you. I'm glad you enjoyed reading ^_^

momqueen 9 months ago

How could you possibly forget Great Pyrenees? This is a wonderful breed (that from a golden retriever owner for 30 years), very loving, silly and majestic. Very much like a newfoundland. As a matter of fact, a newffie is a cross between, a pyrenees and a mastiff.

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