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As of last year, 29% of UK adults owned a dog according to pet charity PDSA – accounting for an estimated population of a staggering 11 million dogs. But how would owners fare sharing their home with some of the biggest dogs on the planet?
Take the English Mastiff, for example. This breed is actually recognised as the largest in the world, with some males reaching up to 230 pounds in weight and up to 30 inches in height. But with their broad, muscular build and adorable squished faces, Mastiffs are endearing as well as impressive. They are also staunchly loyal to their families.
In fact, the biggest dog in the world, by the Guiness Book of Records, was an Old English Mastiff named Zorba. In 1987 he weighed an incredible 343 pounds and stood 8 feet and 3 inches from nose to tail.
Large dog breeds as a rule fall in the working group of dogs, which means they were originally bred to help people with tasks such as pulling sleds and carts, guarding livestock and protecting homes, and protecting families.
As well as their size and stature, large-breed dogs are prized for their strength and intelligence.
This article takes a look at the top 20 largest dog breeds by weight. But, before we dive in, here are a few important pointers to keep in mind with a big dog:
- Development: Bigger dogs tend to develop more slowly than other breeds, which means they can injure themselves more easily – it’s therefore important to exercise caution and exercise with caution.
- Space: Big dogs require large beds, toys and food bowls and plenty of space in which to live, sleep and, crucially, play.
- Expenses: Bigger dogs cost more in terms of food and supplies and vet bills for large dog breeds will also be higher due to their size and, sometimes, propensity to ailments. This will mean pet insurance costs are likely to be higher as well.
- Training: Big dogs, simply due to their size, can potentially cause more harm and damage than a smaller animal. That demands training and discipline from an early age.
Here’s a look at the top 20 largest dog breeds (by weight) and why there’s just more to love about each one.
| RANK | BREED | AVERAGE WEIGHT |
|---|---|---|
| 1 | Mastiff | 120-230 pounds |
| 2 | Boerboel | 150-200 pounds |
| 3 | Tosa Inu | 100-200 pounds |
| 4 | Saint Bernard | 120-180 pounds |
| 5 | Great Dane | 110-175 pounds |
| 6 | Leonberger | 90-170 pounds |
| 7 | Neapolitan mastiff | 110-150 pounds |
| 8 | Newfoundland | 100-150 pounds |
| 9 | Anatolian shepherd | 80-150 pounds |
| 10 | Tibetan mastiff | 70-150 pounds |
| 11 | Rottweiler | 80-135 pounds |
| 12 | Bullmastiff | 100-130 pounds |
| 13 | Akita | 70-130 pounds |
| 14 | Black Russian terrier | 80-130 pounds |
| 15 | Irish wolfhound | 105-120 pounds |
| 16 | Great Pyrenees | 85-100 pounds and up |
| 17 | Scottish deerhound | 75-110 pounds |
| 18 | Bernese mountain dog | 70-115 pounds |
| 19 | Dogue de Bordeaux | 99-110 pounds and up |
| 20 | Cane corso | 90-100 pounds |
Top 20 Largest Dog Breeds
1. Mastiff
The ultimate gentle giant, the mastiff has a rich history spanning thousands of years. These dogs are known for their obedient and docile nature, as well as their protective instincts toward their beloved families.
| MASTIFF OVERVIEW |
|---|
| Average Height: 30+ inches (male) 27.5+ inches (female) |
| Average Weight: 160-230 pounds (male), 120-170 pounds (female) |
| Life Expectancy: 6-10 years |
2. Boerboel
Originating from South Africa, the boerboel is a robust dog known for its athleticism and protective instincts. With a name derived from the Dutch word “Boer,” meaning farmer, it reflects their role as loyal companions to the Dutch and German settlers who arrived in South Africa in the mid-1600s. Through interbreeding, the boerboel blends various large guard dog breeds. Boerboels were originally used for big game hunting and safeguarding homes and families; today, they remain devoted to watching over their loved ones.
| BOERBOEL OVERVIEW |
|---|
| Average Height: 24-27 inches (male) 22-25 inches (female) |
| Average Weight: 150-200 pounds |
| Life Expectancy: 9-11 years |
3. Tosa Inu
The Tosa Inu, or the Japanese mastiff, has a history as a fighting dog originating from Shikoku island. This breed emerged from a crossbreeding programme involving the Shikoku Inu and various western breeds such as mastiffs, bulldogs, Great Danes, and German pointers. In Japan, the Tosa Inu is held in high regard, much like sumo wrestlers, and is treated with utmost respect and ceremony. While displaying a stoic and patient nature, the Tosa Inu exhibits deep affection toward its family, although it may initially appear reserved around strangers. With their vigilant instincts, Tosa Inus are great as watchful guardians of the home.
| TOSA INU OVERVIEW |
|---|
| Average Height: 21.5-23.5 inches |
| Average Weight: 100-200 pounds |
| Life Expectancy: 10-12 years |
4. Saint Bernard
The Saint Bernard is a gentle giant among dog breeds. Originating from the Swiss Alps, this breed is known for its imposing size and kind-hearted nature. Saint Bernards have a distinctive appearance with their massive head, deep-set eyes and expressive face framed by droopy jowls. Known for their legendary rescue efforts in the treacherous mountain passes, they have incredible strength, endurance, and an exceptional sense of direction. Their friendly and patient demeanor makes them excellent family pets.
| SAINT BERNARD OVERVIEW |
|---|
| Average Height: 28-30 inches (male), 26-28 inches (female) |
| Average Weight: 140-180 pounds (male), 120-140 pounds (female) |
| Life Expectancy: 8-10 years |
5. Great Dane
The Great Dane, often referred to as the “Apollo of dogs,” is a majestic and elegant breed. Originating from Germany, these gentle giants have a regal stature, standing as one of the tallest dog breeds. Great Danes can reach heights of up to 32 inches at the shoulder and weigh nearly 200 pounds. When standing on their hind legs, they are taller than most people. Great Danes are affectionate and thrive on companionship, making them popular family pets.
| GREAT DANE OVERVIEW |
|---|
| Average Height: 30-32 inches (male), 28-30 inches (female) |
| Average Weight: 140-175 pounds (male), 110-140 pounds (female) |
| Life Expectancy: 7-10 years |
6. Leonberger
The Leonberger, a breed originating from Germany, is a handsome dog with a gentle and friendly nature. With a thick double coat and a powerful build, they carry themselves with elegance and strength. Leonbergers can grow to be quite large, with males reaching up to 170 pounds. They are known for their calm and patient nature, making them great family members. Leonbergers are extremely smart and eager to please, and often do well with obedience training, therapy work, and water rescue.
| LEONBERGER OVERVIEW |
|---|
| Average Height: 28-31.5 inches (male), 25.5-29.5 inches (female) |
| Average Weight: 110-170 pounds (male), 90-140 pounds (female) |
| Life Expectancy: 7 years |
7. Neapolitan Mastiff
The Neapolitan mastiff is a unique and powerful dog breed that originates from Italy. With its massive size and wrinkled skin, it has quite the distinct appearance. They are known for their calm and protective nature, making them loyal and devoted companions. Neapolitan mastiffs tend to develop a deep bond with their families and have a sweet and loving temperament. Neapolitan mastiffs have low energy levels, which means they enjoy a calm and easygoing lifestyle, with a majority of their time spent lounging around the house.
| NEAPOLITAN MASTIFF OVERVIEW |
|---|
| Average Height: 26-31 inches (male), 24-29 inches (female) |
| Average Weight: 150 pounds (male), 110 pounds (female) |
| Life Expectancy: 7-9 years |
8. Newfoundland
The Newfoundland is a friendly and gentle breed that originally comes from Canada. They are known for their large size and thick, water-resistant coat that helps them stay warm even in cold waters. Newfies are excellent swimmers, in part due to their webbed feet, and are strong enough to save people from drowning. They are also very patient and good with children, making them great family pets, and are known for being calm and well-behaved. If you don’t mind lots of drool, Newfoundlands make wonderful members of the family.
| NEWFOUNDLAND OVERVIEW |
|---|
| Average Height: 28 inches (male), 26 inches (female)28 inches (male), 26 inches (female) |
| Average Weight: 130-150 pounds (male), 100-120 pounds (female) |
| Life Expectancy: 9-10 years |
9. Anatolian Shepherd
The Anatolian shepherd is a strong and protective breed originating from Turkey. They have a sturdy build and a thick coat that helps them withstand different weather conditions. Anatolian shepherds are known for their loyalty and bravery, and have been used for centuries to guard livestock from predators. They are extremely intelligent and independent, making them excellent guardians. While they tend to be more serious than other breeds, they can also be gentle and affectionate with their families.
| ANATOLIAN SHEPHERD OVERVIEW |
|---|
| Average Height: 29 inches (male), 27 inches (female) |
| Average Weight: 110-150 pounds (male), 80-120 pounds (female) |
| Life Expectancy: 11-13 years |
10. Tibetan Mastiff
The Tibetan mastiff is a strong and striking dog that originally comes from the mountains of Tibet. They have a thick and fluffy coat that keeps them warm in cold weather. Tibetan mastiffs are known for their loyalty and protective nature and a very deep bark, which makes them excellent guard dogs. They’re typically gentle and loving with their families, but tend to be reserved and aloof with strangers.
| TIBETAN MASTIFF OVERVIEW |
|---|
| Average Height: 26 inches (male), 24 inches (female) |
| Average Weight: 90-150 pounds (male), 70-120 pounds (female) |
| Life Expectancy: 10-12 years |
11. Rottweiler
The rottweiler, originally from Germany, has a sturdy build with a sleek black coat and tan markings. They are known for their loyalty and protective instincts, making them great guard dogs that are very smart and can be easily trained. Despite their outwardly tough appearance, rottweilers can be gentle and loving with their families. They thrive on companionship and enjoy spending time with their human pack. Regular exercise and socialisation are important for their well-being.
| ROTTWEILER OVERVIEW |
|---|
| Average Height: 24-27 inches (male), 22-25 inches (female) |
| Average Weight: 95-135 pounds (male), 80-100 pounds (female) |
| Life Expectancy: 9-10 years |
12. Bullmastiff
The Bullmastiff is a powerful and loyal dog with a strong, muscular build. Bullmastiffs were originally bred to guard country estates, so they are known for their protective nature. They are intelligent, have a calm temperament and can be gentle and affectionate with their loved ones. Bullmastiffs require regular exercise and socialisation to stay healthy and well-behaved; with the right training and care, they can be devoted and loving companions.
| BULLMASTIFF OVERVIEW |
|---|
| Average Height: 25-27 inches (male), 24-26 inches (female) |
| Average Weight: 110-130 pounds (male), 100-120 pounds (female) |
| Life Expectancy: 7-9 years |
13. Akita
The Akita is a loyal and courageous breed originating from Japan. They have a strong and powerful build with a thick, double coat that helps protect them from cold weather. Akitas are known for their independence and intelligence, making them unique and sometimes stubborn family members. They also have a natural protective instinct, which makes them excellent guard dogs. While they can be reserved around strangers, they are devoted and affectionate with their families. Akitas are staunchly loyal and make great lifelong companions.
| AKITA OVERVIEW |
|---|
| Average Height: 26-28 inches (male), 24-26 inches (female) |
| Average Weight: 100-130 pounds (male), 70-100 pounds (female) |
| Life Expectancy: 10-14 years |
14. Black Russian Terrier
Originally from Russia, the black Russian terrier is a strong and confident breed with a thick, dense coat that is usually black or dark gray. They are known for their loyalty and protective nature, making them great guard dogs. They are intelligent and easy to train, but they require consistent guidance and socialisation. Black Russian terriers may look tough, but they can be gentle and affectionate with their families. Regular exercise and mental stimulation are important for their well-being.
| BLACK RUSSIAN TERRIER OVERVIEW |
|---|
| Average Height: 27-30 inches (male), 26-29 inches (female) |
| Average Weight: 80-130 pounds |
| Life Expectancy: 10-12 years |
15. Irish Wolfhound
The Irish wolfhound is a majestic and gentle giant from Ireland. They are one of the tallest dog breeds, with a thin and athletic build. They are famous for their wiry and shaggy coats and are known for their friendly and kind nature, which makes them great family pets. They tend to be calm, good-natured and are known for their loyalty.
| IRISH WOLFHOUND OVERVIEW |
|---|
| Average Height: 32 inches (male), 30 inches (female) |
| Average Weight: 120 pounds (male), 105 pounds (female) |
| Life Expectancy: 6-8 years |
16. Great Pyrenees
The Great Pyrenees is a gentle and protective dog breed that comes from the mountains of France. They have a distinctively thick and fluffy white coat that helps keep them warm. Great Pyrenees are known for their loyalty and watchful nature, making them great guard dogs. They are calm and patient, and usually gentle with children and other pets. Great Pyrenees require regular exercise and grooming to stay healthy.
| GREAT PYRENEES OVERVIEW |
|---|
| Average Height: 27-32 inches (male), 25-29 inches (female) |
| Average Weight: 100+ pounds (male), 85+ pounds (female) |
| Life Expectancy: 10-12 years |
17. Scottish Deerhound
The Scottish deerhound is a gentle and graceful dog. They have a slender and athletic build, with a shaggy coat that comes in a variety of colors. Scottish deerhounds are known for their friendly and mild-mannered nature and are usually gentle with children and good with other animals. Historically used for hunting deer, they require regular exercise and lots of space to run and play.
| SCOTTISH DEERHOUND OVERVIEW |
|---|
| Average Height: 30-32 inches (male), 28+ inches (female) |
| Average Weight: 85-110 pounds (male), 75-95 pounds (female) |
| Life Expectancy: 8-11 years |
18. Bernese Mountain Dog
A friendly and affectionate dog, the Bernese mountain dog comes from the Swiss Alps. They are known for their sturdy and powerful build, and thick, tricolored coat. Bernese mountain dogs have a gentle and patient nature, making them great family pets. They are good with children and other animals, and they love being part of the family. Bernese mountain dogs enjoy outdoor activities and do well in cooler climates. Regular exercise and mental stimulation are important for their well-being.
| BERNESE MOUNTAIN DOG OVERVIEW |
|---|
| Average Height: 25-27.5 inches (male), 23-26 inches (female) |
| Average Weight: 80-115 pounds (male), 70-95 pounds (female) |
| Life Expectancy: 7-10 years |
19. Dogue de Bordeaux
The Dogue de Bordeaux, also known as the French Mastiff, is a powerful and loyal dog breed from France. They have a large and muscular build with loose, wrinkled skin and a broad head. Dogue de Bordeauxs are known for their calm and gentle nature, making them great family members. They are protective and devoted to their loved ones. Even though they appear intimidating, they are usually good-natured and patient, especially with children.
| DOGUE DE BORDEAUX OVERVIEW |
|---|
| Average Height: 23-27 inches (male), 23-26 inches (female) |
| Average Weight: 110+ pounds (male), 99+ pounds (female) |
| Life Expectancy: 5-8 years |
20. Cane Corso
The cane corso is a strong and protective dog originally from Italy. They have a muscular and athletic build, with a short coat. Cane corsos are known for their loyalty and confidence, making them great guard dogs. They are intelligent and can be easily trained, especially with their innate eagerness to please. They are gentle and affectionate with their families, as well as fiercely protective. Early socialisation with people and other dogs is important for this dog.
| CANE CORSO OVERVIEW |
|---|
| Average Height: 25-27.5 inches (male), 23.5-26 inches (female) |
| Average Weight: 90-110 pounds |
| Life Expectancy: 9-12 years |
Care and commitment
Owning a large dog requires extra care and commitment to cater toward their unique needs, including careful joint development, proper nutrition, regular medical care, and providing them with large spaces to live and play. While these big breeds require a lot of maintenance, they are recognised as loyal, loving family members, and make great options to welcome into the right family.
Frequently Asked Questions (FAQs)
What is the laziest big dog?
It depends on who you ask.
For the most part, large breeds tend to be lazy because they were originally bred for guarding humans and homes rather than for athletic purposes, says Dr. Linda Simon, M.V.B. and veterinarian consultant for Dogaspet.com, an informational website about dogs.
“One of the laziest (big dogs) I encounter in my clinic is the Great Dane,” Simon says. “They love to lounge and relax and won’t be running a marathon with you any time soon!”
Dr. Sabrina Kong, D.V.M. and veterinary consultant at WeLoveDoodles.com, an educational website about Doodles, has a different opinion on the laziest big dog.
“Definitely the bullmastiff is the laziest large dog breed due to its low energy levels and tendency to enjoy lounging around,” Kong says.
What's a big dog that doesn't shed?
While all dogs shed, some lose less fur than others, Simon says.
“The Cane Corso and Doberman are two larger breeds who are moderate shedders,” she says.
What age do dogs stop growing?
On average, most large breed dogs reach their adult height by 12 to 18 months, says Dr. Jessica Hess, D.V.M. and owner of GoodVets in Golden, CO.
“Giant breed dogs such as Great Danes, mastiffs, and Newfoundlands can continue to gain in height until age 2 or more. Large and giant breed dogs will continue to fill out even after they have stopped gaining in height,” Hess says.
Do paws determine the size of a dog?
Yes and no.
“Genetics are the big determining factor to how big a dog will grow,” Hess says. “When we don’t know the specific breed, such as the case with many shelter and rescue dogs, we often use the paw size in puppies to give a very broad estimate of adult size. However, this system is far from perfect.”
