Top 10 Largest Dog Breeds in the World

The largest dog breeds in the world combine extraordinary size with surprisingly gentle temperaments — earning the well-deserved nickname “gentle giants” across many of these magnificent breeds. From towering sighthounds that stand eye-level with a child to massive mastiff-type dogs that can outweigh an adult human, the world’s biggest dog breeds are as fascinating as they are impressive.

Whether you are considering one of these giant breeds as a family companion, a working dog, or simply want to satisfy your curiosity about which dogs hold the size records, this comprehensive guide ranks the top 10 largest dog breeds in the world by height and weight — along with the extraordinary world record holders that define the absolute upper limits of canine size.

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How We Ranked the Largest Dog Breeds

Ranking the largest dog breeds in the world requires defining what “largest” actually means — because height and weight do not always correlate. The Irish Wolfhound is the tallest breed; the English Mastiff is the heaviest. Our ranking considers both height and weight measurements, using data from the American Kennel Club (AKC), the Fédération Cynologique Internationale (FCI), and breed standard documentation from recognized kennel clubs worldwide.

All height measurements refer to height at the shoulder (withers) and all weight figures reflect typical adult ranges for the breed.

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Top 10 Largest Dog Breeds — Full Rankings

1. Leonberger

Height: 65–80 cm (25.5–31.5 inches)
Weight: 41–77 kg (90–170 lbs)
Origin: Germany
AKC Group: Working

The Leonberger opens our list of the largest dog breeds in the world with a combination of impressive size and famously gentle temperament that makes it one of the most beloved giant breeds globally.

Developed in Leonberg, Germany in the 19th century by Heinrich Essig — who crossed Saint Bernards, Newfoundlands, and Great Pyrenees — the Leonberger was bred to resemble the lion on the Leonberg town crest. The result is a leonine-looking dog with a distinctive black mask, a flowing mane around the neck and chest, and a thick, water-resistant double coat in shades of golden yellow through red-brown.

Despite its formidable appearance and substantial size, the Leonberger is a family-oriented, patient, and affectionate breed. It is particularly good with children — its calm and tolerant nature making it well-suited to active family life. The breed’s intelligence and trainability extend to working roles including water rescue, search and rescue operations, and therapy work.

The Leonberger is an energetic giant that requires significant daily exercise — at least one hour of vigorous activity daily — and thrives in environments where it has both physical and mental stimulation. Its thick double coat requires regular grooming to prevent matting and manage shedding.

Key Facts:

• Lifespan: 8–9 years
• Temperament: Gentle, playful, family-friendly
• Exercise needs: High
• Notable role: Search and rescue, water rescue

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2. Newfoundland

Height: 66–71 cm (26–28 inches)
Weight: 45–80 kg (100–176 lbs)
Origin: Canada (Newfoundland)
AKC Group: Working

The Newfoundland is one of the most recognizable of the largest dog breeds in the world — and its reputation for extraordinary gentleness and devotion to family has earned it the nickname “nanny dog” in many households.

Developed by fishermen on the island of Newfoundland, Canada, this breed was built for work in cold water — pulling fishing nets, rescuing drowning victims, and hauling heavy loads. Its physical adaptations for aquatic work are remarkable: webbed feet that provide exceptional swimming propulsion, a thick, water-resistant double coat that insulates against cold Atlantic water, and broad, powerful hindquarters that generate strong swimming strokes.

The Newfoundland’s water rescue ability is extraordinary — documented rescues of drowning humans by Newfoundlands have been recorded throughout history, and the breed continues to be trained for water rescue work in several European countries, particularly Italy where the SCSN (School of Rescue Dogs for the Water) trains Newfoundlands professionally.

Despite its imposing size, the Newfoundland has one of the sweetest, most patient temperaments of any large breed. It is calm, devoted, and exceptionally tolerant of children — making it a genuinely excellent family companion for households that can accommodate its size and exercise requirements.

Key Facts:

• Lifespan: 9–10 years
• Temperament: Sweet, patient, devoted, calm
• Exercise needs: Moderate to high
• Notable role: Water rescue, draft work, family companion

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3. Pyrenean Mastiff

Height: 63–79 cm (25–31 inches)
Weight: 54–109 kg (120–240 lbs)

Origin: Spain (Aragon region)
Recognition: FCI recognized; limited AKC recognition

The Pyrenean Mastiff is among the largest dog breeds in the world by potential weight — with large males approaching or exceeding 100 kg — and is one of the most ancient livestock guardian dog types in Europe.

Originating in the Aragon region of northern Spain, the Pyrenean Mastiff was developed over centuries to protect sheep flocks traveling along the traditional cattle drives (cañadas) of the Iberian Peninsula. In its working role, this breed had to confront wolves, brown bears, and human livestock thieves without human direction — developing the independent judgment, confidence, and physical power necessary to face large predators alone.

The Pyrenean Mastiff is distinguished from other mastiff breeds by its generally benign temperament when not provoked. It is calm, noble, and affectionate with its family — but transitions rapidly to fierce protectiveness when it perceives a threat to those in its care. The breed is massive, thick-boned, and covered in a dense, semi-long double coat, typically white with colored patches on the head and body.

The Pyrenean Mastiff’s numbers declined dramatically during the mid-20th century due to the decline of traditional transhumance livestock practices in Spain. Dedicated breed enthusiasts have worked to restore the population, and it is now stable, though still relatively rare outside Spain.

Key Facts:

• Lifespan: 8–12 years
• Temperament: Calm, gentle with family, protective when necessary
• Exercise needs: Moderate
• Notable role: Livestock guardian, family protection dog

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4. Kangal Shepherd Dog

Height: 71–86 cm (28–34 inches)
Weight: 40–84 kg (88–185 lbs)
Origin: Turkey (Sivas Province)
AKC Group: Working (recognized 2018)

The Kangal Shepherd Dog — formerly listed by the AKC as the Anatolian Shepherd Dog before the two were separated into distinct breeds — is one of the most powerful working dogs among the largest dog breeds in the world, with a bite force estimated at approximately 743 PSI — among the highest recorded for any dog breed.

Originating in the Sivas region of central Turkey, the Kangal has been used for thousands of years to protect livestock — particularly sheep flocks — from wolves, bears, jackals, and even cheetahs in some parts of its range. The breed’s effectiveness as a livestock guardian has led to active export programs: in Namibia and Kenya, Kangal Shepherd Dogs have been introduced to protect livestock from cheetah predation as a non-lethal conservation alternative to shooting cheetahs — with remarkable success that has been documented by conservation organizations.

The Kangal is a powerfully built, fawn to tan colored dog with a distinctive black mask and black ear tips. Despite its imposing physical presence and protective instincts, it is generally calm and affectionate with its family — though it remains watchful and territorial with strangers, as its working role demands.

Key Facts:

• Lifespan: 11–13 years
• Temperament: Calm, protective, loyal, independent
• Exercise needs: High
• Notable role: Livestock guardian, conservation applications

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5. Saint Bernard

Height: 66–76 cm (26–30 inches)
Weight: 54–82 kg (120–180 lbs)
Origin: Switzerland and Italy (Western Alps)
AKC Group: Working

The Saint Bernard is one of the most culturally iconic of all the largest dog breeds in the world — its image as an Alpine rescue dog carrying a small barrel of brandy around its neck is embedded in popular culture worldwide, even if the barrel was largely a romantic embellishment rather than historical fact.

The breed was developed by the monks of the Great Saint Bernard Hospice — a monastery situated at the Saint Bernard Pass between Switzerland and Italy, used for centuries as a refuge for travelers crossing the treacherous Alpine route. The monks began using large dogs for avalanche search and rescue, companion guarding, and cart pulling, refining the breed through selective breeding over generations into the massive, thick-coated dog we recognize today.

Saint Bernards were responsible for the documented rescue of an estimated 2,000 people over the course of approximately three centuries of hospice rescue work. The most famous individual rescue dog was a Saint Bernard named Barry, who is credited with saving between 40 and 100 lives in the early 19th century and whose preserved body is on display at the Natural History Museum of Bern.

The modern Saint Bernard is a calm, patient, and affectionate family companion — famously gentle with children despite its enormous size. The breed comes in both short-haired and long-haired varieties, both of which require regular grooming.

Key Facts:

• Lifespan: 8–10 years
• Temperament: Gentle, patient, friendly, calm
• Exercise needs: Moderate
• Notable role: Alpine search and rescue, family companion

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6. Spanish Mastiff

Height: 71–89 cm (28–35 inches)
Weight: 63–91 kg (140–200 lbs)
Origin: Spain
Recognition: FCI recognized

The Spanish Mastiff — Mastín Español in its native country — is one of the largest and heaviest of the European livestock guardian breeds, and its combination of height and weight makes it a genuine contender for the top position among the largest dog breeds in the world by total mass.

Like the Pyrenean Mastiff, the Spanish Mastiff has ancient roots in the Iberian Peninsula, where it was used to protect the enormous sheep flocks that moved seasonally along the cañadas of medieval and early modern Spain. The breed is mentioned in texts dating to the 10th century and may have been present in the peninsula significantly longer.

The Spanish Mastiff is massive, heavy-boned, and covered in a dense double coat that comes in multiple acceptable colors including fawn, red, black, wolf-gray, and brindle. It carries a distinctive loose, wrinkled face with deep, expressive eyes — giving it a noble, serious expression that reflects its confident, self-assured temperament.

In its working role, the Spanish Mastiff is quiet, decisive, and fearless — confronting wolves and bears without hesitation. In family life, it is calm, affectionate, and remarkably dignified — a dog that does not demand constant attention but forms deep bonds with its household members.

Key Facts:

• Lifespan: 10–12 years
• Temperament: Calm, loyal, protective, intelligent
• Exercise needs: Moderate
• Notable role: Livestock guardian, estate protection

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7. Bully Kutta

Height: 75–86 cm (30–34 inches)
Weight: 60–90 kg (132–198 lbs)
Origin: Pakistan and India
Recognition: Not AKC or FCI recognized

The Bully Kutta — also called the Pakistani Mastiff, Indian Alangu Mastiff, or Pakistani Bully — is one of the most powerful and physically imposing of all the largest dog breeds in the world, though it remains relatively unknown outside of South Asia.

The breed’s name derives from the Punjabi word “Bohli” (heavily wrinkled) and the Urdu/Hindi word “Kutta” (dog). Developed over centuries in the Punjab and Sindh regions of what is now Pakistan and northwestern India, the Bully Kutta was used for big game hunting — including hunting of large predators — and for guarding properties and estates.

The Bully Kutta is an extremely powerful, muscular dog with a broad, short muzzle, deep chest, and heavily muscled hindquarters. Its coat is short and most commonly white, though black, brindle, and fawn coloring occurs.

Critically, the Bully Kutta has a temperament that requires serious consideration: it is not suitable for inexperienced owners. The breed is dominant, highly territorial, and can be aggressive toward other dogs and strangers. It requires experienced handling, extensive early socialization, and consistent training from an experienced owner who understands large, powerful, guardian-type breeds.

The Bully Kutta has been used in illegal dog fighting in parts of Pakistan — a deeply unfortunate practice that responsible breed advocates actively oppose.

Key Facts:

• Lifespan: 8–10 years
• Temperament: Powerful, protective, territorial — experienced owners only
• Exercise needs: High
• Important note: Not suitable for first-time dog owners

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8. Irish Wolfhound

Height: 76 cm and above (30 inches+); minimum 81 cm for males
Weight: 48 kg and above (105 lbs+)
Origin: Ireland
AKC Group: Hound

The Irish Wolfhound is the tallest dog breed in the world — its minimum height standard for males (81 cm / 32 inches at the shoulder) exceeds the maximum of virtually every other breed, and exceptional individuals regularly exceed 90 cm. This extraordinary height makes the Irish Wolfhound uniquely recognizable among all the largest dog breeds in the world.

The breed has one of the longest documented histories of any dog — references to large wolf-hunting hounds in Ireland appear in texts dating to at least the 1st century AD, and legends place the Irish Wolfhound in Irish mythology thousands of years earlier. The most famous Irish Wolfhound in history was Gelert, the legendary dog of Welsh prince Llywelyn the Great — though the most historically documented ancient individuals were given as diplomatic gifts between Irish kings and Roman consuls.

True to its name, the Irish Wolfhound was the primary tool used to control wolf populations in Ireland — a task that required a dog fast enough to run down a wolf and powerful enough to kill it. By the late 18th century, the Irish Wolfhound had driven the Irish wolf to extinction, and the breed itself nearly disappeared for lack of purpose. Breed revival efforts in the 19th century by Captain George Graham restored the Irish Wolfhound to a sustainable population.

Despite its formidable history as a war dog and hunting hound, the modern Irish Wolfhound is one of the gentlest and most even-tempered of all giant breeds. It is calm, quiet, dignified, and deeply affectionate with its family — though it retains the athletic ability and speed of a sighthound and requires adequate exercise.

Key Facts:

• Lifespan: 6–8 years (shortest of the giant breeds due to its size)
• Temperament: Gentle, calm, dignified, affectionate
• Exercise needs: Moderate to high
• Notable distinction: Tallest dog breed in the world

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9. English Mastiff

Height: 70 cm and above (27.5 inches+)
Weight: 54–113 kg (120–250 lbs)
Origin: England
AKC Group: Working

The English Mastiff — most commonly called simply “the Mastiff” — is the heaviest dog breed in the world by average weight, and the holder of the all-time heaviest individual dog record. It is the definitional giant dog breed — massive, heavily muscled, deep-chested, and broad-headed — representing the apex of canine sheer mass.

The breed has ancient origins — mastiff-type dogs were known in Britain before the Roman invasion, and Julius Caesar reportedly noted large British war dogs in his accounts of the Gallic Wars. English Mastiffs were used as war dogs, bear-baiting dogs, estate guardians, and hunting dogs throughout their long history before the rise of the modern breed standard in the 19th century.

The English Mastiff is characterized by its enormous, broad head with a short, blunt muzzle; deep-set, small eyes; and heavy, wrinkled face. The body is massively boned with a powerful, square build. The coat is short, dense, and comes in fawn, apricot, or brindle coloring — always with a black mask.

Despite its intimidating physical presence, the English Mastiff has a docile, dignified, and deeply loyal temperament. It is calm and affectionate with its family — including children — and courageous without aggression. Its sheer physical presence is sufficient to deter most threats without the dog needing to act.

The English Mastiff’s size does impose real practical considerations: it requires significant physical space, eats substantially more than an average dog, and has significant veterinary costs associated with its large body. Joint health — particularly hip and elbow dysplasia — requires careful monitoring.

Key Facts:

• Lifespan: 6–10 years
• Temperament: Docile, dignified, loyal, protective
• Exercise needs: Moderate
• Notable distinction: Heaviest dog breed in the world

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10. Great Dane

Height: 71–81 cm (28–32 inches); frequently exceeds 90 cm
Weight: 50–82 kg (110–180 lbs)
Origin: Germany
AKC Group: Working

The Great Dane claims the top position among the largest dog breeds in the world by combining remarkable height with an athletic, elegant build that has earned it the title “Apollo of Dogs” — a reference to the Greek god of beauty and athleticism. No other breed so perfectly combines towering size with graceful proportions.

Despite its name suggesting Danish origin, the Great Dane — Deutsche Dogge in its native Germany — is definitively a German breed, developed from large boarhounds used by German nobility for hunting wild boar, deer, and bear. The breed’s ancestors were powerful enough to bring down a wild boar — an animal capable of seriously injuring a human — while being elegant and controlled enough to serve as companion dogs in noble households.

The modern Great Dane is a study in contrasts — enormously tall yet graceful in movement, powerfully built yet friendly in temperament, imposing in appearance yet gentle in character. Its friendly, sociable, and affectionate nature makes it a surprisingly suitable family companion despite its extraordinary size.

Great Danes come in six standard colors: fawn, brindle, blue, black, harlequin (white with irregular black patches), and mantle (black and white). The harlequin Great Dane — with its striking white coat and black patches — is arguably the most visually distinctive of all giant dog breeds.

The breed holds multiple world records for individual height — the current record holder for tallest living dog is typically a Great Dane. The previous record holder, Zeus from Michigan, stood at an extraordinary 111.8 cm (44 inches) at the shoulder before his passing in 2014.

Key Facts:

• Lifespan: 7–10 years
• Temperament: Friendly, patient, dependable, affectionate
• Exercise needs: Moderate to high
• Notable distinction: Tallest dog breed in the world; multiple Guinness World Records

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What is the Biggest Dog in the World?

The answer depends on whether you measure by height or weight.

World’s Tallest Dog — Great Dane

The Guinness World Record for tallest dog is consistently held by Great Danes. The most famous record holder was Zeus, a Great Dane from Otsego, Michigan, who measured 111.8 cm (44 inches) at the shoulder — taller than many dining room tables. Zeus passed away in 2014 but remains the tallest dog ever officially recorded.

The current living record holder for tallest dog changes periodically as new record-breaking Great Danes are verified by Guinness World Records — the title consistently belongs to this breed.

World’s Heaviest Dog — English Mastiff

The record for the heaviest dog ever recorded belongs to Zorba, an English Mastiff from London who weighed an extraordinary 155.6 kg (343 lbs) at his heaviest in 1989. Zorba simultaneously held the record for the longest dog at 251 cm (8 feet 3 inches) from nose to tail. These records have never been surpassed in verified documentation.

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Nearly Made the List — Honorable Mentions

Three additional breeds deserve recognition as contenders among the largest dog breeds in the world:

Caucasian Shepherd Dog (Caucasian Ovcharka)
Height: 64–75 cm+ | Weight: 45–90 kg+
One of the most powerful livestock guardian breeds in existence — used historically to protect flocks from wolves and bears in the Caucasus Mountain region. Can exceed 90 kg in large males.

Neapolitan Mastiff
Height: 60–75 cm | Weight: 50–70 kg
The heavily wrinkled, loose-skinned Italian mastiff — one of the most visually distinctive of all large breeds and the breed used as the model for Fang in the Harry Potter films.

Boerboel
Height: 59–65 cm | Weight: 70–90 kg
The South African Mastiff — a powerful farm guardian developed in South Africa to protect homesteads from large predators including leopards and baboons. Massively muscled and extremely powerful for its height.

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Living with Giant Dog Breeds — What You Need to Know

If the largest dog breeds in the world appeal to you as a potential owner, understanding the practical realities of giant dog ownership is essential before committing.

Space Requirements

Giant breeds need significantly more living space than average dogs — both indoors and outdoors. A Great Dane or English Mastiff needs space to stand, turn, and lie down fully extended without restriction. Small apartments are genuinely unsuitable for most giant breeds.

Exercise Needs

Despite their size, most giant breeds have moderate rather than extreme exercise requirements — though “moderate” for a dog weighing 80 kg means substantially more physical activity than a small breed’s equivalent. Daily walks of at least 30–60 minutes are essential, along with access to a securely fenced outdoor space.

Veterinary Costs

Giant breeds require larger doses of all medications, vaccines, and anesthetic agents — directly increasing veterinary costs proportional to body weight. Joint health conditions including hip dysplasia and elbow dysplasia are significantly more common in giant breeds, and surgical treatment of these conditions is expensive. Pet insurance is strongly recommended.

Lifespan

The most challenging reality of giant dog ownership is lifespan. The largest breeds typically live significantly shorter lives than smaller dogs — Irish Wolfhounds average just 6 to 8 years, Great Danes and English Mastiffs 7 to 10 years. This accelerated aging relative to body size is a consistent biological pattern across mammalian species.

Nutrition

Giant breed puppies require carefully managed nutrition — specifically diets formulated for large and giant breeds with controlled calcium and phosphorus ratios to support healthy bone and joint development without excessive growth rates that increase skeletal disease risk.

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Frequently Asked Questions

What is the largest dog breed in the world?

By height, the Great Dane is the largest dog breed in the world — holding multiple Guinness World Records for individual dogs. By weight, the English Mastiff is the heaviest breed on average, with the heaviest individual dog ever recorded (Zorba, 155.6 kg) belonging to this breed.

What is the tallest dog breed?

The Irish Wolfhound has the highest minimum height standard of any breed — males must stand at least 81 cm (32 inches) at the shoulder. However, Great Danes hold the individual world records for greatest height, with exceptional individuals exceeding 111 cm.

What is the heaviest dog breed?

The English Mastiff is the heaviest dog breed in the world by average weight, with large males regularly exceeding 100 kg. The heaviest individual dog ever recorded was Zorba, an English Mastiff who weighed 155.6 kg in 1989.

Are giant dog breeds good family pets?

Many of the largest dog breeds are excellent family companions — including the Great Dane, Saint Bernard, Newfoundland, and Leonberger. These breeds are known for gentle, patient temperaments with children. However, their size requires supervision with very young children as even unintentional contact can knock a small child over.

How long do the largest dog breeds live?

Giant breeds generally have shorter lifespans than smaller breeds. Irish Wolfhounds average 6 to 8 years; Great Danes and English Mastiffs average 7 to 10 years; Saint Bernards and Newfoundlands average 8 to 10 years. The Kangal Shepherd Dog is notably longer-lived at 11 to 13 years.

What giant dog breed is best for first-time owners?

The Great Dane, Saint Bernard, and Newfoundland are considered the most suitable giant breeds for first-time large dog owners due to their predictable, gentle temperaments and trainability. The Bully Kutta and Kangal Shepherd Dog are not recommended for inexperienced owners.

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Summary

The largest dog breeds in the world represent the most extraordinary examples of canine size — from the towering Irish Wolfhound and Great Dane to the massively heavy English Mastiff and Spanish Mastiff. Each of these magnificent breeds carries a rich history as working animals — hunting, guarding, herding, and rescuing — before finding their place as beloved family companions in the modern world.

The top 10 largest dog breeds in the world are:

• Great Dane
• English Mastiff
• Irish Wolfhound
• Bully Kutta
• Spanish Mastiff
• Saint Bernard
• Kangal Shepherd Dog
• Pyrenean Mastiff
• Newfoundland
• Leonberger

If you are considering one of these extraordinary animals as your next companion, research the specific breed thoroughly, connect with reputable breed-specific organizations, and prepare your home and lifestyle for the joyful — if demanding — experience of sharing your life with a gentle giant.