There’s a special kind of wonder that comes with standing beside a truly giant dog—one whose size alone turns heads, yet whose gentle presence leaves a lasting impression.
There are many popular dog breeds in the world, but you’ll rarely hear about these giant dog breeds, which are not only distinctive in appearance but also in other characteristics. Unlike common breeds, these rare dog breeds need special care, training, diet, and more attention.
They are lesser known in general, but, no doubt, special among them all!
If you need a rare dog for yourself now, or are simply fascinated by these dogs, this guide will introduce you to some of the most spectacular oversized companions out there! Get ready to meet these giants who may convince you of soft and fun companionship right now.
Unique and Rare Giant Dog Breeds for Enthusiasts
1. Irish Wolfhound

Irish Wolfhounds are among the oldest dog breeds, with roots tracing back to the days of ancient Rome. What stands out immediately is their remarkably calm and kind temperament.
Historically celebrated for their skill in pursuing big game—such as wolves, deer, and boar—these towering dogs balance their impressive hunting heritage with a soft, affectionate nature. True gentle giants, they thrive on staying close to their families and offering loyal, comforting companionship.

Temperament
Despite the hunting history, these dogs remain calm and gentle. These dignified companions don’t just have a magnificent physique but a caring and protective nature. They are deeply loyal, and flourish on human companionship.
These easygoing breeds might look active, but in real life, they are couch potatoes who love their relaxed lifestyle.
Special Traits
These dogs have a regal gait and carry prestige and politics wherever they go.
The towering presence is enough to deter intruders.
They may look intimidating, but have a friendly and pleasant demeanor.
2. Spanish Mastiff

This huge and powerful ancient breed from Spain was originally bred to protect livestock. They have an imposing size (weighing up to 200 pounds) with droopy jowls and wrinkly skin. Their main purpose was to protect sheep from wild predators like wolves.
The Spanish Mastiffs are one of the largest and rarest dog breeds in the world.

Temperament
Though a serious dog, it remains faithful to their owner and makes a great family pet. They have all the traits that make a perfect guard dog and an affectionate companion. But the kindness is for close family members; they are aloof with strangers.
Spanish Mastiffs are highly intelligent, and with obedience training, they can quickly adjust to any home, even with other pets, as stated by PetMD.
Special Traits
These fearless breeds can protect their family with full determination.
They are more-of-a-watchdog than a playful buddy.
These rare herding breeds are capable of looking after 100 sheep on their own.
3. Kangal

Kangal Shepherd dogs are calm and protective, well-suited to farm work and outdoor lifestyle. They were bred to protect livestock and villagers from wild animals.
Kangals have a striking short, double coat with a dense undercoat. They are not suitable for everyone, so only experienced dog owners should consider this breed!
Temperament
Kangals usually remain composed but extremely love their humans. Their loyalty has no boundaries, which makes them excellent pets. They are natural guardians and will often go to great lengths to defend their loved ones in every dangerous situation.
They may show their independent side sometimes, but these intelligent breeds are highly responsive to training.
Special Traits
They have the strongest bite force among many other breeds.
They are protective without being aggressive and show a calm disposition.
Kangals are so massive and strong that’s why novice owners should avoid a dog that physically outmatches them.
4. Tibetan Mastiff

Tibetan Mastiffs are famous for their distinctive looks, towering frame, and lion-like, flowy mane. And not just by appearance, these large, rare dog breeds have keen sight and are as alert as lions.
They were initially used for guarding purposes in the Himalaya for thousands of years. Beneath all that tough exterior lies a beautiful, fur-coated heart that often melts many enthusiasts.

Temperament
Tibetans usually catch attention with their magnificent personality, but what makes them more beloved is their temperament! Tibs provide unparalleled devotion and protection to their family.
They are sweet and well-mannered with family members but quite the opposite with outsiders, according to the American Kennel Club. They can be quite vocal, so it’s better to keep indoors (before your neighbors come out on you!).
Special Traits
These rare giants are light-footed and face every threat with fearlessness.
They may look strong and territorial, but have surprisingly low energy.
Tibs can be trusted with any task given; they handle it well without constant guidance.
5. Caucasian Shepherd Dog

This rare guardian breed is among the world’s most muscular dog breeds with an intimidating presence that’s enough to give anyone goosebumps.

Originally developed to protect livestock and property from predators like wolves and bears, this dog has never taken its job lightly. They are also known as the Caucasian Mountain Dog and Russian Bear Dog.
Temperament
Caucasian Shepherds are self-reliant dogs with great intelligence, alertness, and a protective nature. They are completely devoted to their family but distrustful of strangers. Their fearless nature, courage, and confidence make them great watchdogs.

Usually calm and moderately active, these dogs can be problematic without firm training. This big dog comes with big responsibility, so definitely not recommended for passive owners.
Special Traits
These natural guardians have centuries of experience in guarding and a protective role.
Their thick double coat protects them against harsh climates.
They have a natural inclination to protect their territory and family.
6. Leonberger

The Leonberger is one of the rarest dog breeds with a regal and dignified demeanor. This hardworking and gentle-natured dog breed got its name after a city in Germany, from where it originated.
Never judge them by their massive appearance, Leos have extremely sweet and loving personalities. According to WebMD, well-trained Leonbergers get along well with almost everyone.

Temperament
Leonbergers make excellent housedogs for families with children and other pets. You can never find a complete package of love, loyalty, and smartness in a single dog breed, other than a Leon.
These gentle pups are affectionate in nature and highly trainable. Leos have instincts to protect and accompany their humans and make great service dogs too!
Special Traits
Despite being large in size, these dogs are totally reliable with small children.
They have a strong work ethic and a protective nature.
These dogs have webbed feet, which makes them great swimmers.
7. Dogue de Bordeaux

The Mastiff of Bordeaux, also known as the French Mastiff, is one of the oldest and rarest dog breeds in the world. They are gentle companions with a quiet, calm demeanor (neighbor-friendly).
Mastiffs are strong-willed, powerful, and watchful breeds with a laidback nature. Bordeaux dogs are a great fit for many kinds of families and households.

Temperament
The Dogue de Bordeaux is a truly courageous yet remarkably gentle giant, with a personality that hardly matches the huge frame. They are deeply loyal to their family and thrive on attention.
French Mastiff is not an overly rowdy dog; instead, remains composed usually. They express clear displeasure towards intruders without any aggression. Consistent training is necessary from puppyhood to control the stubborn streak.
Special Traits
These working dogs were primarily used to pull carts, guard estates, and hunt large game.
They are low-maintenance breeds with adaptability to various living situations.
They are not high in energy and need only regular exercise to stay active.
Conclusion
These large dogs have a rich heritage as working dogs, shaping their powerful bodies with unmatched stamina and endurance.
Pet parents who are in search of these unique giant dog breeds need to understand that they require early training, grooming, patience, and care much more than normal breeds.
Their population is getting lower day by day in England. So, it’s important to find a responsible breeder for acquiring such rare breeds. These dogs have mostly spent their life as herding or guarding dogs, so they need to be properly trained as puppies to ensure their well-being as adults.
