Big dogs have a way of taking up not just space in your home, but in your heart, too. Whether they’re lumbering across the yard like gentle giants or trying (and failing) to fit into your lap, there’s something irresistibly charming about their oversized personalities.
These massive canines were originally bred for a purpose—guarding livestock, pulling carts, or working alongside humans in rugged terrains. Today, they continue to win hearts not for their strength alone, but for their calm, devoted nature and their knack for making even the toughest day a little softer.
If you’ve ever wondered what it’s like to share your life (and probably your couch) with a dog big enough to rival a small pony, you’re in for a treat.
Let’s take a look at the largest giant dog breeds known to exist—the ones that prove “the bigger, the better” might just apply to furry friends, too.
Key Takeaways
Meet gentle giants like the Great Dane, Saint Bernard, and Irish Wolfhound—big dogs with even bigger hearts.
Discover how the Newfoundland, Leonberger, and Tibetan Mastiff went from hardworking heroes to loving family pets.
Get to know the Cane Corso, Bernese Mountain Dog, and Anatolian Shepherd—strong, loyal protectors who adore their people.
Find out why these giant breeds prove that the bigger the dog, the bigger the love.
Largest Giant Dog Breeds Known To Exist
1. Great Dane
The Great Dane is a stunning dog—tall, lean, and graceful despite its size. With long legs, a proud stance, and a kind expression, this breed truly turns heads.
Known for their calm and gentle nature, Great Danes make wonderful family pets. They’re gentle around children and loyal to their humans, though they do need plenty of room to stretch and relax.
Temperament & Personality
Don’t be fooled by their size—Great Danes are big softies at heart. They’re friendly, patient, and affectionate, often forgetting how large they are when they try to sit on your lap. Originally bred to work, these dogs have a spirited yet easygoing personality that fits beautifully into family life.
Fun Facts
The name “Great Dane” is misleading—they actually originated in Germany, not Denmark.
They were once bred as hunters and guard dogs, prized for their strength and courage.
Great Danes have held the Guinness World Record several times for being the tallest dog in the world.
They love brisk walks, jogs, and games—but always keep them on a leash, as their curious noses can lead them anywhere!
2. Saint Bernard
The Saint Bernard is one of the most loving and gentle giants you’ll ever meet. Known for their warm and affectionate nature, these dogs adore their families and are especially good with children.
Though calm and patient, they’re also protective and make excellent watchdogs. They may be cautious around unfamiliar dogs, but with their people, they’re pure sweetness wrapped in fur.
Personality & Temperament
Saint Bernards are big-hearted and loyal. They rarely bark, but when they do, it’s usually for a reason. They love spending time with their family members and are happiest when surrounded by people. They do drool and shed quite a bit, but their affectionate, easy-going nature more than makes up for it.
Fun Facts
Originating from the Swiss Alps, Saint Bernards were trained by monks as search-and-rescue dogs in snowy mountains.
Their famous image with a small wooden barrel around the neck comes from old rescue tales.
They were bred to find lost travelers buried in snow and are surprisingly agile despite their size.
Thanks to the Beethoven movie franchise, they’ve become one of the most recognizable large dog breeds worldwide.
3. Newfoundland
The Newfoundland is a true hero of the water. Originally from Canada, this breed was developed to help fishermen and rescue people in danger at sea.
With its powerful build, webbed paws, and water-repellent coat, the Newfoundland is perfectly designed for swimming, as mentioned by Hill’s Pet. These dogs are strong yet gentle, making them both dependable workers and great family dogs.
Personality & Temperament
Affectionately called “Newfies,” these dogs are sweet, patient, and calm. They get along wonderfully with small children and are known for their kind hearts. Despite their size, they’re gentle and easy to live with. They love swimming, playing in the water, and enjoying long naps afterward.
Fun Facts
Bred in Newfoundland and Labrador, they were used to haul nets, pull carts, and save people from drowning.
Their webbed feet and water-resistant coat make them natural swimmers.
Known for being massive and drooly, they balance strength with an incredibly soft personality.
Even today, they remain one of the best water rescue breeds in the world.
4. Irish Wolfhound
The Irish Wolfhound is a majestic and noble dog, famous for its impressive height and gentle heart. Despite its towering presence, this breed is not bulky or muscular—it’s tall, lean, and graceful. Originally bred for hunting big game, the Irish Wolfhound carries itself with quiet confidence and dignity.
Personality & Temperament
Don’t let their size fool you—Irish Wolfhounds are gentle souls. They’re affectionate, loyal, and love being around their families. Their calm and friendly nature makes them wonderful companions. Though they were once fearless hunters, today they’re known more for their loving and protective temperament.
Fun Facts
Recognized by the American Kennel Club as the tallest dog breed in the world.
Dates back to the 15th century, when they were bred to hunt wolves and other large animals.
Often appear in the Guinness Book of World Records as runner-ups to the Great Dane.
While strong and brave, they’re also sensitive and thrive on affection and companionship.
5. Leonberger
The Leonberger is a majestic and powerful dog with a heart as big as its frame. Originating in Germany, this breed was created to resemble a lion, right down to the thick, golden coat and the mane that males often grow around their necks.
Despite their size and regal look, Leonbergers are known for their gentle and loving personalities, earning them the nickname “Gentle Lion.”
Personality & Temperament
Leonbergers are calm, affectionate, and love being part of the family. They get along well with children and even other pets when properly socialized. Though strong and muscular, they’re sensitive by nature and enjoy companionship and affection.
These dogs are happiest when they have a purpose, whether that’s pulling a cart, swimming, or simply keeping their humans company.
Fun Facts
The breed was developed in Leonberg, Germany, by Heinrich Essig, who wanted a dog that looked like the lion on the town’s crest.
Recognized by the American Kennel Club (AKC) in 2010, making it one of the newer large breeds.
Male Leonbergers have a lion-like mane, while females have a softer, sleeker look.
They’re prone to joint issues and heart conditions, so regular vet checkups are a must.
6. Tibetan Mastiff
The Tibetan Mastiff is one of the most ancient and awe-inspiring dog breeds in the world. Originally bred to guard homes and livestock in the Himalayas, this majestic dog is strong, independent, and deeply loyal.
With its thick double coat and powerful build, the Tibetan Mastiff looks even larger than it is—earning it an almost mythical presence.
Personality & Temperament
Despite their imposing appearance, Tibetan Mastiffs are calm, affectionate, and devoted to their families. They enjoy spending time with their humans but also value their independence.
These dogs are intelligent and extremely protective, often standing watch over their home like quiet sentinels. They’re strong-willed, so proper training and early socialization are important, but they respond beautifully to consistent, gentle guidance.
Fun Facts
Bred in the Himalayas to guard temples and flocks from predators.
Their thick coat helps them thrive in cold climates but can cause overheating in warmer areas.
They tend to shed and drool a lot, requiring regular grooming to stay comfortable.
Known for being independent thinkers, they enjoy both quiet time and family interaction.
7. Great Pyrenees
The Great Pyrenees is a breathtakingly beautiful dog, known for its thick, fluffy white coat and calm, noble presence. Initially bred to protect livestock in the snowy mountains between France and Spain, this breed is as courageous as it is gentle.
With a proud stance, gentle temperament, and steady gaze, the Great Pyrenees looks every bit the protector it was born to be.
Personality & Temperament
These dogs are gentle, affectionate, and incredibly loyal to their families. They’re wonderful with children and tend to be patient and calm indoors. Don’t be fooled by their relaxed nature, though—they’re strong, athletic, and capable of moving quickly when needed.
Early training helps manage their independent streak, but their intelligence and steady temperament make them a joy to live with.
Fun Facts
Known as Le Montagne des Pyrénées in French, reflecting their mountain heritage.
Their double coat is dirt- and tangle-resistant, making grooming surprisingly manageable.
Originally bred as livestock guardians, they’re instinctively protective yet gentle at heart.
They enjoy long walks and hikes, but are equally happy lounging with their family.
8. Bernese Mountain Dog
The Bernese Mountain Dog is a beautiful, tri-colored breed known for its gentle heart and hardworking spirit.
Originating from the Swiss Alps, these dogs were once used to pull carts, drive cattle, and guard farms. Today, they’ve traded farm duties for family life but still carry the same loyal, affectionate nature that made them so beloved.
Personality & Temperament
Bernese Mountain Dogs, or “Berners,” are calm, kind, and great with children. They get along well with other dogs and love being part of the family.
Their affectionate, easy-going nature makes them excellent companions for both work and play. Though they enjoy the outdoors, they’re equally happy relaxing beside their favorite people after a long day.
Fun Facts
Bred in Switzerland over 2,000 years ago by the Romans as versatile farm dogs.
Known for their tricolor coat—black, rust, and white—with distinct markings on their face and chest.
Recognized by the American Kennel Club (AKC) in 1937.
Love cold weather and outdoor adventures like hiking and pulling small carts.
9. Cane Corso
The Cane Corso is a powerful and majestic dog with a long history as a protector. Originating in Italy, this breed was once used to guard property, hunt large game, and even accompany soldiers in battle.
With its muscular build and confident stance, the Cane Corso looks intimidating—but to its family, it’s all heart.
Personality & Temperament
Despite their tough appearance, Cane Corsos are deeply loyal and affectionate with their loved ones. They’re intelligent, alert, and eager to please, which makes them excellent working dogs.
However, they need an experienced owner who can provide firm but loving guidance. When properly trained and socialized, they make calm, loyal companions who thrive on human connection.
Fun Facts
Descended from ancient Roman war dogs known as Molossians.
The name “Cane Corso” comes from Latin, meaning “bodyguard dog.”
Bred to guard farms, hunt wild boar, and protect families.
Nearly went extinct after World War II, but was revived in the 1970s through dedicated breeding efforts.
10. Anatolian Shepherd
The Anatolian Shepherd is an ancient and powerful breed that hails from Turkey. Originally bred to guard flocks and livestock, this dog is known for its courage, intelligence, and independence.
With its strong build and calm confidence, the Anatolian Shepherd has long been trusted as a guardian of both animals and people.
Personality & Temperament
This breed is loyal and devoted but also highly independent. Anatolian Shepherds are natural protectors and will always keep watch over their family.
They can be wary of strangers but are gentle and affectionate with those they know. Early and consistent socialization is key to helping them channel their protective instincts in positive ways.
Fun Facts
Originated in Turkey and is also known as the Karabash or Kangal dog.
Bred as a livestock guardian, capable of protecting herds from wolves and other predators.
Known for their keen alertness—they’ll often “sleep with one eye open.”
They’re independent thinkers, needing patient and confident owners.
Conclusion
Big dogs truly leave a big impact. While many large dog breeds may look imposing at first, they’re often gentle, loyal, and loving at heart. From historic guardians of farm animals to family companions, these dogs tend to show unwavering devotion to their humans.
They may need moderate exercise, regular grooming, and plenty of space, but what they give back in affection and protection makes every effort worthwhile for pet parents.
Among the most recognizable giant breeds, it’s clear that their size is matched only by their hearts. Whether you live in the countryside or the city, these dogs form strong bonds and become true members of the family.
There are other big dog breeds as well that you should know about. These include the Dogue de Bordeaux, Italian Mastiff, Anatolian Shepherd dog, Neapolitan Mastiff, English Mastiff, and French Mastiff.
