Big dogs have a way of turning heads. Their size, presence, and sometimes goofy charm make them unforgettable. But here’s the twist — some of these gentle giants aren’t just brawny; they’re downright brilliant.
Imagine the smartest dog breeds that can open doors, learn complex commands, and seem to understand your mood before you even say a word. While intelligence shows up in different ways — from problem-solving to emotional sensitivity — these large breeds are exceptional in how they combine sharp minds with loving hearts.
They’re quick learners, which makes training a joy, and they often seem to “read the room” better than some humans do. Whether you’re looking for a canine partner in work, sport, or just day-to-day life, the smartest big breeds offer a unique blend of companionship and capability.
They’re ready to impress you with their skills one moment and melt your heart with their affection the next. Get ready to meet the brainy giants who prove that size and smarts aren’t mutually exclusive — in fact, together, they make for some of the most remarkable dogs you’ll ever know.
Most Smartest Big Dog Breeds On The Planet!
1. Leonberger
Meet the Leonberger: a majestic, lion-like giant who’s not just about looks—this big guy packs serious smarts, too.
With their massive size and flowing mane, Leonbergers might make you think, “Whoa, that’s a royal beast!” And guess what? They totally are—in the doggy kingdom, they’re like the wise kings and queens who know how to rule with kindness and smarts.
Originating in Germany, the Leonberger was bred to be a working dog, a companion, and a protector all rolled into one fluffy package. These intelligent dogs quickly learn commands and tasks, making them excellent family members who are always eager to please.
But don’t let their gentle demeanor fool you—they’ve got the brainpower to figure things out fast, whether it’s solving puzzles or reading your mood like a pro.
✅ Quick learner — Commands? Tricks? This gentle giant masters them with ease.
✅ Smarts meet sweet personality. They’re basically your fluffy best friend and bodyguard rolled into one.
✅ Big dogs, big hearts, and an occasional hilarious “oops” moment.
Fun fact: Leonbergers are known for their calm, patient nature—perfect for families, even those with tiny humans running around. Just be ready for some slobbery kisses and an impressive “paw-five” from your clever, cuddly lion!
2. Great Pyrenees
Don’t be fooled by all that fluff and those puppy-dog eyes — the Great Pyrenees is a giant genius wrapped in a cloud of fur.
Bred to guard sheep in the rugged Pyrenees Mountains between France and Spain, these majestic dogs have brains as big as their paws and a job description that screams “serious protector.”
With a calm and steady personality, they’re the type of dog who’ll calmly assess a situation before deciding if that suspicious rustle in the bushes is a threat—or just a curious squirrel. Spoiler alert: they’re not fans of squirrels. Or raccoons. Or anything else that dares to approach their turf.
✅ Natural instinct sharper than their teeth (and trust us, those teeth are pretty sharp).
✅ Mostly naps, but always alert. Think of them as fluffy ninjas who prefer snoozing over showdowns… until duty calls.
✅ Independent thinker — They’ll listen… sometimes. When they want to.
✅ Snow, rain, wind? No problem. Their fluffy coat is like a built-in all-weather suit.
Great Pyrenees are also recognized for their strong independence, a characteristic shaped by centuries of instinctual growth.
This independence can occasionally make training difficult, as they may show some stubbornness. Great Pyrenees are energetic dogs, though they can be stubborn at times. They respond best to consistent training that uses positive reinforcement techniques.
Fun fact: They’re so stealthy while patrolling, you might think you have a ghost with fur and a bark!
3. Tibetan Mastiff
Meet the Tibetan Mastiff, the noble giant of the dog world wrapped in a thick, majestic coat that looks like it belongs in a royal court. Bred high in the Himalayas, this smartest dog breed has been guarding flocks and homes for centuries, earning their reputation as a fearless protector with a touch of mystery.
They are classified as a giant dog breed, typically weighing between 70 and 150 pounds. They have an alert posture, a large, broad head, deep-set eyes, a square-shaped muzzle, a muscular build, and a feathered tail that curls over their back.
Don’t be fooled by their fluffy exterior—these extremely smart pups have brains and bravery that could rival any knight. Loyal to their family and wary of strangers, Tibetan Mastiffs are excellent watchdogs who won’t hesitate to raise the alarm if anything seems off.
✅ Ready to defend their family like a fierce lion guarding the pride.
✅ Their thick fur isn’t just for show; it’s a royal cloak of protection.
✅ They have their own ideas, so training requires patience and a good sense of humor.
✅ Weather? Bring it on. Snow, wind, or rain—they’re built for the extremes.
Fun fact: Their deep, booming bark can echo through the neighborhood like a royal proclamation, making sure everyone knows who’s boss.
If you want a dog with the heart of a lion, the fluff of a cloud, and the loyalty of a knight, the Tibetan Mastiff is your mythic, four-legged guardian—just be ready for a lifetime of majestic attitude and cuddles on their terms.
4. Saint Bernard
Meet the Saint Bernard, the ultimate gentle giant who’s equal parts lovable goofball and loyal guardian. The Saint Bernard is a large dog that was originally bred in Switzerland to rescue travelers who were stranded and freezing during snowstorms.
St. Bernards are a sizable breed. Males usually stand between 28 and 30 inches tall at the shoulder and weigh between 140 and 180 pounds, while females are a bit smaller, measuring 26 to 28 inches tall and weighing 120 to 140 pounds.
Known for their good humor and trustworthy nature, these massive pups have a knack for making everyone feel safe and loved.
✅ Quietly keeps an eye on things, but will step up if needed.
✅ Loves kids and usually gets along great with other pets.
✅ Perfect for those who want a giant lap dog (warning: you may need a bigger couch!).
They’re rarely barkers—unless it’s a serious “protect the family” situation. Otherwise, they’re more likely to be found snuggling with the kids or lounging beside your favorite chair. St. Bernard dogs typically need a lot of care and attention, making them high-maintenance pets for their owners, says WebMD.
Fun fact: Despite their size, Saint Bernards are gentle enough to make the best snuggle buddies—just watch out for the drool!
5. Great Dane
Meet the Great Dane, the lanky, lovable giant who looks like they just stepped off a royal throne—tall, elegant, and with a personality as big as their paws.
Danes are famous for their large size. Typically, a Great Dane stands between 28 and 32 inches tall. Great Danes are quite heavy, usually weighing between 110 and 175 pounds.
Despite their imposing size (we’re talking basketball player tall here), Great Danes are known for being gentle, affectionate, and downright goofy at times.
✅ They might tower over you, but they’re just oversized softies craving belly rubs.
✅ Great with kids and other pets, these gentle giants make for loyal and loving companions.
✅ They rarely bark, but their presence alone is enough to say, “Stay away!”
✅ Masters of lounging, these dogs have perfected the art of the slow-motion zoomies.
While they may not be as energetic as some other breeds, they still enjoy moderate playtime and need ample space to move around and exercise.
Fun fact: Great Danes are often called “Apollo of Dogs” because of their majestic appearance—basically, they’re the gods of doggos.
If you want a loving, laid-back, and ridiculously tall cuddle buddy who’ll guard your castle with a soft touch, the Great Dane is your perfect match. Just remember to keep the treats coming—they’ve got a royal appetite!
6. Newfoundland
Say hello to the Newfoundland, the ultimate big-hearted, big-fluffy lifesaver who’s as comfortable splashing through waves as they are sprawling on your couch.
This massive, sweet-natured breed is famous for its love of water and its incredible rescue instincts—think of them as the canine version of a superhero in a furry raincoat.
Born to swim and save, they’ve got webbed feet and a natural knack for water rescues. With their thick, fluffy coat and gentle eyes, they’re basically walking, drooling cuddle machines.
✅ Patient, protective, and crazy loyal, they’re great with kids and other pets alike.
✅ Despite their size, they’re often as calm and laid-back as a lazy Sunday morning.
✅ They don’t bark much, but if you’re in trouble, you’ll feel their presence—like a big, fluffy guardian angel.
Newfoundlands are incredibly sweet and gentle dogs who trust easily, learn quickly, and enjoy spending time with children. They get along well with other dogs and love being affectionate family members. Although their nature is typically friendly and welcoming, Newfoundland dogs will also alert you if a stranger is nearby.
Fun fact: Their massive paws act like snowshoes, making them perfect for trudging through winter snowstorms without breaking a sweat.
7. Irish Wolfhound
Standing tall and proud, the Irish Wolfhound is the skyscraper of the dog world—towering, graceful, and full of old-world charm. Originally bred to hunt wolves and protect the Irish countryside, these regal dogs have a noble spirit and a surprisingly gentle soul.
The Irish Wolfhound, the tallest of all dog breeds, is also elegant and athletic. These gentle giants are affectionate and get along well with the whole family, as long as there’s enough room to accommodate their large size.
They’re the ultimate couch companions who just happen to come with extra-long legs and a majestic beard. Known for their calm demeanor and loyalty, Irish Wolfhounds are like your big, soft teddy bear that’s always ready to protect the family.
✅ Their long limbs make them look like the giraffes of the dog world (but way cuddlier).
✅ Devoted to their family with a heart that matches their size.
✅ Not the zoomies type—more likely to nap next to you after a leisurely stroll.
✅ They might not bark much, but their presence alone keeps trouble at bay.
Fun fact: Despite their giant stature, Irish Wolfhounds are known as gentle giants—they’d rather give you puppy eyes than a growl.
Conclusion
The highly intelligent breeds on the planet include highly intelligent herding dogs like Border Collie, German Shepherd, Shetland Sheepdog, Australian Shepherd, Australian Cattle Dog, and Belgian Sheepdog.
Known for their exceptional intelligence, these breeds are easy to train and eager to please, making them well-suited for agility and obedience competitions, and roles as police, rescue, therapy, and service dogs. Golden Retriever, Labrador Retriever, Bernese Mountain Dog, and Doberman Pinscher also rank among the most intelligent large dogs, forming close bonds with their owners and excelling with early socialization and mental stimulation.
These exceptionally smart dogs thrive when given proper training and tasks to prevent boredom, making them wonderful companions and highly capable working dogs.
