When people say “loyal dog breeds,” the same names pop up on repeat: Labrador Retriever, Golden Retrievers, German Shepherds… maybe a Bernese Mountain dog if you love all that mountain dog fluff.
All solid. All lovable.
Also, this is not about a hunting dog pack that was meant to hunt foxes, or an Irish Setter chasing game birds across a field. Different lanes, different jobs.
But sometimes you want a BIG dog. A dog that is not everywhere. A dog breed you do not see at the dog park every weekend. A dog that makes strangers ask: “Wait… what even is that?”
We have compiled seven of such lesser-known big dog breeds with unsurpassed loyalty.
Big dogs with real working roots, a gentle nature, and loyal and steady hearts. If you want a big-boned breed that acts like your ride or die, these picks are great companions for real life today, too.
Lesser-Known Big Dog Breeds With Unsurpassed Loyalty
1. Otterhound
A shaggy scent hound that is always down to get wet.
The Otterhound is a hunting dog from medieval England originally bred to track otters in rivers. That’s why this breed has a dense and shaggy coat, webbed feet, and a nose that finds “interesting” smells you did not even know existed.
And did you know, the Otterhounds are so scarce that the American Kennel Club has said it’s “more rare than the giant panda?” And it has webbed feet made for water work, as noted by AKC.
They are lesser-known because this is such a rare dog breed and because scent hounds come with … scent hound properties. Your dog will pause mid-walk to investigate a blade of grass.
But once an Otterhound bounds, it is pure loyalty. They adore their family, love being included, and tend to be goofy, affectionate, and gentle for such a big dog.
They are excellent swimmers and need ample exercise, sniff games, and regular exercise with structure. Plus, early socialization helps with other pets and other dogs.
And yes, this dog can be vocal, with a “deep bay” that can cross long distances, as noted by Purina.
If you live in an apartment with thin walls, plan ahead: training, enrichment, and plenty of outdoor time to keep the peace.
2. Leonberger
Lion looks. Soft heart. “Where’s my people?” energy.
The Leonberger is a lush-coated giant from Germany, and Orvis highlights their gentle disposition, well-mannered habits, goody antics, serene patience, and sensitive nature.
Translation: big, calm, and very much into their human family.
They are lesser-known because giant dog breeds take commitment. Plus, they went extinct after World War I. If you want a family pet that’s affectionate without being chaotic, this breed is a dream. They can be incredibly affectionate dogs, generally easygoing and highly trainable with consistent training, of course.
These large dogs also have a double coat, so yes, your lint roller earns a promotion.
All in all, gentle giant dogs with a calm demeanor and thick double coat do best with early training, manners, and moderate exercise.
They are also loyal family companions who want the whole family involved.
They are also the kind of pet that leans on you like a weighted blanket. So if you want a gentle giant that is all heart, this breed delivers.
3. Komondor
Cords. Guardian brain. zero interest in nonsense.
The Komondor is a Hungarian livestock guardian bred to protect sheep and other livestock. The AKC describes a powerfully large flock guard dog covered in “profuse white cords”.
That coat helped the dog blend into the flock and offered protection. The personality matches the job: independent, protective instincts, and not impressed by strangers.
This is one of those chief of the herding dogs that is loyal, serious, and fiercely protective. They are lesser-known because they are best suited for experienced dog owners. The owners should provide proper training, proper socialization, and calm leadership for these livestock guard dogs.
All in all, one of the very hardworking large dog breeds with a strong protective nature and a corded double coat (that makes them look like a walking mop).
They need consistent training and steady routines to be the best version of themselves.
Also, early socialization helps them live with other pets when introductions are slow and smart.
If you have other breeds at home already, make small, calm, supervised introductions. This dog respects rules and thrives when the house feels good.
4. Neapolitan Mastiff
The slowest bouncer you will ever love.
Neapolitan Mastiffs are HUGE and powerful guardians with an unforgettable look. They are known for their massiveness and loose folds of skin, and these wrinkly dogs have a guardian reputation, being bred some 5,000 years ago.
They are lesser known because they are a lifestyle: drool, space, and a dog who moves like a tank with feelings.
At home, many are laid back, good-natured, and affectionate with family. The loyalty shows up as solid devotion. They post up near you, watch the room, and act like your safety is their job.
Guard dog energy, minus the constant barking.
But, a giant dog breed (150+ pounds or so) with a gentle disposition at home. They need proper and consistent training because of their size demands. But still, they prefer home time over nonstop dog park socializing.
Quick note: these puppies grow into a pure mess. So teach the basics early, loose leash, polite greetings, and “off”.
5. Tibetan Mastiff
Majestic floof with attitude + loyalty with boundaries.
The Tibetan Mastiff is an ancient breed, the AKC calls the “guardian dog supreme”. watchful, aloof, imposing, and devoted family pet.
They are lesser-known as everyday pet choices because they are independent and need experienced dog owners. You cannot freestyle this breed. All they need is early training, early socialization, and respectful structure.
Do all of this (all the cuddles, too), and this Mastiff dog breed will become incredibly loyal and gentle with their family members.
Also, a double coat. Serious double coat.
These are one of the large breeds with protective instincts and a calm demeanor indoors. And, for that size (150+ pounds), they do need ample exercise, physical stimulation, and clear boundaries.
And, they can coexist with other pets when raised together.
They are not trying to be everyone’s friend, and that’s okay. With the right family, they will automatically become steady and loyal companions in the most watchful way.
6. Azawakh
Elegant, sleek, and fast dog.
The Azawakh is a West African sighthound that originates in countries including Mali and Niger. Traditionally, this dog hunted fast game and could guard, too.
They are lesser-known in the U.S., so people sometimes assume “mixed breed dogs”. NOPE! This is a distinct dog breed with a very specific temperament: sensitive, loyal, and usually they bond to one special person.
They are athletic dogs with bursts of high energy rather than a calm and cozy off-switch at home. “Run hard, nap harder”. Yes. And why not? They are one of the fastest dog breeds that love to run.
Plus, a rare dog breed that needs exercise and mental balance. But you do need careful management around small dogs and unfamiliar other dogs.
This is a pet that appreciates routine. Loud and busy homes can overwhelm them. Calm homes help them relax, bond, and show that affectionate side.
7. Spanish Mastiff
Rustic giant. Steady nerves. Protector of the crew.
The Spanish Mastiff was originally bred as a livestock guardian dog that used to protect flocks from wolves and other predators.
PetMD describes them as calm, gentle, noble, and docile.
They are lesser-known because most people meet the Great Pyrenees first. But Spanish Mastiffs are their own thing: massive, calm, loyal, and determined. They can be calm and kind around family, but on guard around strangers.
They do need proper training and socialization to become the incredibly gentle and affectionate dogs that they are. Not a “nanny dog” claim, but this is just a big and steady dog that takes protecting the family seriously.
They are also chill about lounging. Give them a shady yard, a comfy bed, and a daily walk, and you will see that calm demeanor settle in.
Be mindful: these dogs have strong guardian instincts, and they need space, regular exercise, and training for manners. Ideal companions for families, especially those that enjoy laid-back days at home.
Conclusion
If you are used to big-name breeds, Great Danes, Irish Wolfhounds, and Saint Bernards, it’s easy to forget there are so many other dog breeds in large packs.
But these seven prove it: lesser-known dogs are not any less loyal. It means you get a dog with clear working roots and loyalty that is personal.
No matter if you meet one through rescue dogs or a responsible breeder, treat the relationship like a long-term pet partnership.
Give puppies early training, keep up regular exercise, and offer a calm home. Do that, and you will get sweet dogs with all the cuddles. Just in XXL.
