There’s nothing quite like the presence of a giant dog in your home. Big dogs have a way of filling hearts—and living rooms—with love.
Their sheer size can be awe-inspiring, but it also comes with responsibilities that any prospective pet parent should understand before bringing one into their family. Large dog breeds are more than just big bodies—they’re big personalities, loyal companions, and sometimes even gentle protectors of the home.
While life with a giant pup can be a little messier (and require more space), the rewards are immeasurable: endless affection, unwavering loyalty, and a presence that’s impossible to ignore.
If you’ve ever dreamed of sharing your life with a gentle giant, get ready to meet unique and rare dog breeds that are as remarkable in personality as they are in size.
Did You Know? Biggest dog breeds like Neapolitan Mastiff can weigh over 150 pounds, but despite their massive size, many are surprisingly gentle and great with families.
Unique and Rare Giant Dog Breeds You Should Meet
1. Leonberger
If there were a dog version of a knight in shining armor, it would be the Leonberger. Named after the town of Leonberg in Germany, this lion-like appearance dog was beloved by European royalty for its friendly temperament, striking looks, and versatile skills.
Originally, Leonbergers worked on farms, pulling carts and keeping livestock company—basically the medieval Swiss Army knife of dogs, as PetMD noted.
Size: Enormous! Standing 25–32 inches tall and weighing up to 170 pounds
Temperament: Gentle, patient, loyal, and affectionate
Despite their massive stature, Leonbergers are true gentle giants. Socialized and trained properly, they are calm, confident, and remarkably patient—especially with children. They’re the kind of dogs that could pick you up in a cuddle and still tiptoe like a ballerina…well, almost.
Their sheer size means they crave space, but they also love snuggling on the couch, often leaving humans feeling like they’ve been squished by a furry, 170-pound pillow.
Energy level: Moderate—they love activity but can relax like true champions
Family fit: Excellent with children and other pets
Leonbergers are not just pretty faces in giant packages. They thrive when given a job, whether it’s participating in search-and-rescue, cart pulling, or even just “helping” around the house. Their intelligence makes them easy to train, but they also have a soft side—they crave attention, affection, and basically want to be included in everything you do.
Life expectancy: Shorter than smaller breeds, around 7 years
In short, the Leonberger is a perfect combination of strength, intelligence, and heart, making them one of the most lovable giant dog breeds you can meet. They’re large, lovable, and so affectionate, you might need a bigger couch…or just accept that your Leonberger is now your sofa.
2. Black Russian Terrier
Don’t let the “terrier” in the name fool you—this is not your neighbor’s tiny, yappy pup. The Black Russian Terrier is a towering, powerful, and courageous dog built to impress.
Originally bred in Russia for military and guard work, these dogs are loyal, intelligent, and protective, making them the ultimate combination of muscle and brains.
Size: Giant—males can reach 27–30 inches tall and weigh up to 130 pounds
Temperament: Loyal, protective, gentle with family, wary of strangers
Black Russian Terriers are naturally cautious with strangers, which makes them excellent watchdogs. But once they know someone isn’t a threat, they can be affectionate, playful, and even charming.
Their gentle nature with children makes them ideal family companions, despite their intimidating size. Think of them as a big, shaggy bodyguard who loves belly rubs.
Energy level: Moderate to high—they need activity and mental stimulation
Family fit: Great with children and family members; careful socialization needed for strangers
Their dense, black, curly coat is not just stylish—it’s also weather-resistant, perfect for brave pups who aren’t afraid to go outside in rain or snow. Grooming is needed, but it’s worth it for a dog that looks like it just stepped off a Russian aristocracy portrait.
In short, the Black Russian Terrier is a powerful, loyal, and affectionate giant. With the right training and socialization, this dog is both a fearless guardian and a loving family companion—a perfect blend of strength, brains, and heart.
3. Dogue de Bordeaux
Say bonjour to the Dogue de Bordeaux, also known as the French Mastiff—a giant teddy bear in a wrinkly, drool-worthy package. Loyal, affectionate, and downright charming, this breed is perfect for families who have patience, a sense of humor, and plenty of towels.
Size: Massive—males can weigh up to 150 pounds
Temperament: Loyal, affectionate, protective, with a hint of stubbornness
The Dogue de Bordeaux is incredibly loyal and forms deep bonds with its family. However, this Frenchie can have an independent streak, so consistent, patient training is essential.
And a word to the wise: this large breed dog is famous for drool. Those adorable wrinkles can trap moisture, so grooming wipes and a good dog towel are essential for keeping your pup clean and comfy.
Energy level: Moderate—they enjoy walks and play, but also love lounging
Family fit: Excellent with children, gentle with family members
Despite their intimidating size and massive jowls, Dogues are soft-hearted giants who want nothing more than love, attention, and a comfortable spot on the couch. They’re affectionate, protective, and have a way of making their humans feel like royalty…or at least like they’re in charge of a very large, slobbery shadow.
In short, the Dogue de Bordeaux is a gigantic, loyal, and affectionate companion. They may be drooly, wrinkly, and stubborn at times, but their love and devotion make them one of the most lovable giant dog breeds you could hope to meet.
4. Broholmer
Meet the Broholmer, Denmark’s own impressive mastiff-like marvel. Originally employed as a guard dog in the homes of the wealthy, this rare breed combines size, strength, and a calm, loyal temperament—perfect for families who want a dog that’s both majestic and affectionate.
Size: Large and powerful, males often weigh 110–140 pounds
Temperament: Calm, friendly, loyal, and watchful
The Broholmer has a dominant walk and a deep, impressive bark, which makes it an excellent watchdog without being aggressive.
Properly trained and socialized, they are calm, even-tempered, and friendly with family members, while still maintaining a watchful eye over strangers. This balance of strength and gentleness makes them a true gentle giant.
Energy level: Moderate—enjoys daily walks and family playtime
Family fit: Excellent with children and adults, but early socialization is key
Though their numbers dwindled during World War II, the breed successfully made a comeback in the 1970s, and today Broholmers are cherished as family companions and guardians, as per Wikipedia. They have the impressive presence of a mastiff but the heart of a soft, devoted companion.
In short, the Broholmer is a majestic, loyal, and gentle giant—the kind of dog that turns heads wherever it goes, yet melts your heart the moment you give it affection.
5. Neapolitan Mastiff
Say hello to the Neapolitan Mastiff, the Italian cousin of the English Mastiff. Don’t let their slightly smaller size fool you—these dogs are still massive, wrinkly, and undeniably impressive, making them one of the largest breeds you’ll ever meet.
Size: Large—males can weigh 120–150 pounds
Temperament: Calm, loyal, affectionate, and protective
Neapolitan Mastiffs are classic gentle giants. They love lounging in the sun, napping on the couch, and following their humans around the house—basically professional relaxation experts.
While they enjoy calm indoor life, regular walks are a must to keep their big bodies healthy and happy. These wrinkly wonders may look intimidating, but they’re soft-hearted at home, forming deep bonds with their families.
Energy level: Low to moderate—enjoys leisurely walks and plenty of naps
Family fit: Great with children and other pets with proper socialization
Their loose, hanging skin and massive jowls give them a look that’s both imposing and endearing, perfect for anyone who wants a dog that looks tough but is really a giant teddy bear.
The Neapolitan Mastiff typically lives only 7–9 years, which is shorter lifespan. Their large size and susceptibility to health issues—such as hip dysplasia and heart disease—contribute to this reduced life expectancy.
In short, the Neapolitan Mastiff is a wrinkly, loyal, and affectionate giant. They may be slow movers and sun-lovers, but their heart, devotion, and sheer presence make them a truly unforgettable dog breed.
6. Scottish Deerhound
Step aside for the Scottish Deerhound, a majestic, tall coursing hound often called the “Royal Dog of Scotland”. Built from the ancient Greyhound template, this working dog combines elegance, power, and a gentle personality, making it a true giant of the canine world.
Size: Towering—males can reach 32 inches at the shoulder and weigh around 110 pounds
Temperament: Gentle, easygoing, loyal, and affectionate
Originally bred to stalk and hunt giant red deer, Deerhounds are athletic, strong, and graceful.
But don’t let their hunting heritage fool you—they are amazingly calm and affectionate at home, happy to enjoy both the outdoors and cozy family time. Stand back, though—you’ll need a little distance to fully appreciate their majestic silhouette.
Energy level: Moderate—enjoys long walks, open fields, and occasional sprints
Family fit: Great with adults and children, enjoys companionship
Scottish Deerhounds are generally low-maintenance indoors, but their size means you need to be mindful of their neck health and thyroid function. With care, these gentle giants make loyal companions who are both noble in appearance and warm in heart.
Life expectancy: 7–9 years
Grooming: Minimal—regular brushing to maintain their crisp coat
In short, the Scottish Deerhound is a tall, noble, and affectionate giant, perfect for families who have space, patience, and a love for a dog that looks like it stepped straight out of Scottish royalty.
7. Greater Swiss Mountain Dog
Meet the Greater Swiss Mountain Dog, a giant, muscular, and cheerful companion straight from the Alps. This breed is built for work and adventure, but it also has a gentle, affectionate side that makes it perfect for families who want a loyal, big-hearted canine friend.
Size: Large and sturdy—males can reach 25–29 inches tall and weigh up to 140 pounds
Temperament: Loyal, gentle, confident, and friendly
Originally bred in Switzerland to herd cattle, pull carts, and guard property, the Greater Swiss Mountain Dog is strong, intelligent, and eager to help.
Despite their size and history as farm workers, they are incredibly gentle with children and form deep bonds with their human families. Think of them as mountain-sized cuddle buddies with a work ethic.
This breed’s short, tricolor coat makes grooming simple, and their friendly nature makes them approachable despite their imposing size. A Greater Swiss Mountain Dog is the kind of dog that can haul a wagon one day and nap at your feet the next, all while looking majestic doing it.
In short, the Greater Swiss Mountain Dog is a gentle, loyal, and strong giant, perfect for families who want a versatile, affectionate, and mountain-ready canine companion.
Conclusion
Unique and rare giant dog breeds are best suited for experienced dog owners who understand the needs of big breeds. These intelligent companions require early and consistent training, daily exercise, and specially formulated food to maintain their health.
Giant dogs often come with higher vet bills, more food, and potential health concerns, so responsible care from a young age is essential. Whether for country living or families prepared for low-energy, sweet-faced giants, these rare breeds make devoted, affectionate, and remarkable pets—offering loyalty, companionship, and a truly unforgettable presence in any home.
