Having a dog is a joy. But having a giant dog, one that stands tall, guards your house, and fills your home with love, is something else entirely.
These gentle giants may look intimidating to most due to their imposing size and deep bark, but most of them are actually… absolute softies! Sadly, some of the rarest dog breeds in the world are also the ones that most often end up in need of homes.
And that’s because big dogs need space, commitment, and experienced dog owners who understand their needs. They need daily exercise, strong guidance, and lots of love.
Yet, if you open your home (and heart) to one, you will get not just another pet, but a devoted family member for life.
Fun Fact!
Did you know that one of the tallest dog breeds in the world, the Irish Wolfhound, can reach up to 7 feet when standing on its hind legs?
That’s taller than most NBA players!!
Despite that towering size, these dogs are famous for having a gentle nature and calm personality. It is proof that sometimes the biggest dog breeds have the softest hearts.
Rarest Giant Dog Breeds In Need of Homes
1. Tosa
Strong. Calm. Rare.
The Tosa, a large Mastiff-type dog breed, is one of the rarest giant dog breeds in the world. And also one of the most misunderstood. Originally bred in Japan (hence called the Japanese Mastiff), this giant dog was developed for dog sports and guarding.
They have the strength of the English Mastiff and the endurance of the Japanese fighting dogs.
They have a muscular build, a short coat, and a noble presence that surely commands respect. Unfortunately, because of their history, Tosas are often overlooked or even banned in some places, which means many of these rarest giant dogs need homes.
Loyal and calm dogs. Despite their past, Tosas are gentle at home, and they are pretty devoted to their humans.
Excellent guard dogs. They are alert, watchful, and fiercely protective without unnecessary aggression display.
Quiet strength. They rarely bark but always keep an eye on their loved ones.
Laid back indoors. With enough daily exercise, they relax like big teddy bears.
If you give this dog consistent training and proper socialization (actually, they need extensive socialization), the Tosa will ultimately become a loyal companion that thrives in a stable and loving home.
2. Tibetan Mastiff
Majestic. Independent. Devoted.
We can define the Tibetan Mastiff in one word, and that is “ancient”. This rare breed dates back thousands of years and was actually bred by nomads in the Himalayas to guard the flocks and monasteries.
Their thick double coat protects them from the freezing weather. Plus, their calm and dignified personality makes them one of the most dignified rare dogs you will ever meet.
But the truth is, because of their strong will and independence, Tibetan Mastiffs need experienced dog owners who understand their nature. Many of them end up in rescue organizations waiting for the right match.
Independent thinkers. They are loyal, introverted, independent, and an intelligent breed. They prefer to make their own choices.
Protective hearts. They treat their family members as royalty and defend them with utmost courage.
Gentle with kids. They can be calm and affectionate giants if you give them proper training.
Stunning appearance. Their mane-like fur gives them a lion-like look that turns heads everywhere.
Tibetan Mastiffs are the kings of the mountains. These dogs form strong bonds with you, and that loyalty is always unbreakable.
3. Leonberger
Elegant. Affectionate. Playful.
The Leonberger is a mix of love and fluff. Literally. Bred in Germany, these were made to look like lions but act like lambs. Soft and cute. This giant dog breed can weigh over 150 pounds, yet they think they are lap dogs.
Sadly, their sheer size and grooming needs make them one of the rarest dog breeds you will find in shelters or rescues. Many people underestimate how much time and care these big dogs need.
These dogs are very affectionate. They crave family time and hate being left alone. As per WebMD, they would very much like to receive “round-the-clock” attention.
Gentle giants. Despite their bulk, they are patient and great with kids and other pets, and even other dogs. They may “start crying” if you argue in front of them. So, be mindful.
Love the water. Thanks to their webbed feet, they are natural swimmers.
Active companions. They enjoy hikes, play, and mental exercises.
Leonbergers are all heart. And they prove that the biggest dogs thrive at loving the most.
4. Neapolitan Mastiff
Massive. Loyal. Wrinkly dog.
Fangs from ‘Harry Potter’. You can spot a Neapolitan Mastiff from a mile away. Their wrinkled face and saggy jowls give them a very unique and unforgettable look. But behind that droopy expression is one of the most devoted and fiercely protective breeds in the world.
They were originally bred in Italy as guard dogs for homes and estates. Today, they are rare to find; mostly, you will see them in shelters, but sadly, some still end up there due to their size and special care needs.
Dog lovers love them because they are devoted. They bond deeply with their people and are loyal for life.
Confident and calm dogs. They don’t bark much, and they will always watch over their loved ones.
Great with family. When raised well, they adore children and other dogs.
Unique looks. Those wrinkles and massive paws are pure charm!!
Neapolitan Mastiffs have soulful eyes and gentle hearts, and they remind us that love can come in a big and wrinkly package.
5. Irish Wolfhound
Tall. Gentle. Loving.
Meet the gentle giant of Ireland, the Irish Wolfhound. Once bred to hunt wolves and small game, these towering dogs are now known for their calm and affectionate spirit.
As one of the tallest dog breeds recognized by the AKC, the Irish Wolfhound can easily stand taller than most people when stretched out. Despite that height, their hearts are pure gold.
Unfortunately, because of their short lifespan and size, some Irish Wolfhounds end up in rescue organizations needing forever homes.
Kind souls. They are sweet, calm, and adore human company.
Social butterflies. They get along well with other breeds and other pets.
Loyal beyond measure. They form strong bonds that last their entire life.
Perfect companions. Great for people who want a calm and impressive dog.
An Irish Wolfhound leaning gently against your leg is the pure form of companionship and love.
6. Anatolian Shepherd Dog
Fearless. Wise. Devoted.
The Anatolian Shepherd Dog is one of the oldest and rarest giant dog breeds still around today. Originating from Turkey, this powerful dog was developed to guard flocks against predators.
They are intelligent, self-assured, and incredibly loyal dogs. But because they need space, structure, and consistent training, they are not suited for everyone. That’s why some end up in shelters waiting for someone who fully understands these livestock guard dogs.
Independent but loving dogs. They enjoy being part of the family but value their space.
Brilliant thinkers. An intelligent breed that learns fast but prefers doing things their way.
Protective instincts. They are naturally alert and devoted without being aggressive.
Active lifestyle. These dogs love to do daily exercise and to have a purpose in life.
They are living proof that loyalty runs deep and mostly in those who were born to protect.
7. Greater Swiss Mountain Dog
Strong. cheerful. Loyal.
The Greater Swiss Mountain Dog is a working legend from Switzerland. They have a tri-color coat and big brown eyes. And yes, they are among the largest dog breeds that ever existed.
They were bred to pull carts and guard farms, but today, they make excellent pets for families who love outdoor adventures. Sadly, because of their rarity, not many people know about them, and that’s why you might find a few waiting for homes in rescue.
Loyal hearts. They adore their pet parents and show endless affection.
Balanced temperament. As per PetMD, they make excellent partners in everything, be it work or play. Brave when needed, calm at home.
Playful spirit. They enjoy games, agility, and time with puppy pals.
Great with kids. Gentle and patient, true family dogs.
The Greater Swiss Mountain dog is of the type that will pull your sled one day and cuddle beside you the next.
Conclusion
These rarest giant dog breeds in need of homes are more than just big dogs. They are hearts wrapped in fur, waiting for someone to see beyond their size. They might need more food, more space, and a little more training, but what do they give in return?
Unconditional love.
So, if you visit a rescue or shelter, and see a giant dog looking at you with gentle eyes… pause!!
You may be looking at your forever friend.
