21 Dog Breeds With Largest Brain (Brain To Body Ratio)

21 Dog Breeds With Largest Brain

Most dog breeds large brains while some are small, irrespective of the breed type, a dog brain-to-body ratio is very paramount in their lifestyle.

Today we look at 21 breeds with the largest brain size to body ratio.


Why do dogs have varying Brain to body ratios?

Often, dogs due to natural means have varying Brain to Body Ratio

Some of the breeds are as follows:

  • Bullmastiff
  • Boerboel
  • Bloodhound
  • Bernese Mountain Dog
  • Anatolian Shepherd
  • Akita
  • Cane Corso
  • Dogo Argentino
  • Komondor
  • Dogue de Bordeaux
  • Great Dane
  • The Great Pyrenees
  • Irish Wolfhound
  • Kuvasz
  • English Mastiff
  • Newfoundland
  • Rottweiler
  • Saint bernard
  • Tibetan Mastiff
  • Leonberger
  • Reagle


1. Bullmastiff


They are brave, have a large brain-to-body ratio, loyal and affectionate, and loyal, Bullmastiffs can be both good family members and protectors.

They’re willing to please and, despite their big stature, don’t need much exercise

SizeBullmastiff male breed should stand about 25–27 inches (65–69 cm) tall (American Kennel Club (AKC) standard) at the withers and should weigh 110–130 pounds (50–59 kg).

The female of this species should be about 24–27 inches (61–66 cm) at the withers, and 100–120 pounds (45–54 kg).

Exceeding these specifications is discouraged by breeders.



A Bullmastiff’s coat may appear in red, fawn, or brindle.

These are the known acceptable colors in the AKC standard.

The fawn ranges from light brown to a light reddish-brown.

Red ranges from a red-fawn to a dark, rich red.

Brindles are just a striped overlay of the fawn or red.

A Bullmastiff breed has no white markings, except for the chest where small white is allowed.


The Bullmastiff breed has a brachycephalic breed.

The term is known as a flat-faced, short-muzzled dog.

The Bullmastiff head is not extreme as other breeds, such as the pug breed, however, and it is uncommon for the Bullmastiff to have notable breathing issues like some other flatter-faced breeds.


2. Boerboel


These powerful farm dogs fend off weird predators like leopards.

Because of their power and unique dominance, the AKC recommends absolute experience owning big breeds before adopting a Boerboel.

There is a no-frills, no-nonsense attribute to this sleek-coated avenger, who stands as high as 28 inches at the shoulder and weighs as much as a human.

The Boerboel is devoted to protecting humans and the places he loves.

Training and socialization begin early before a pup becomes an adult.

This is a versatile breed, willing to spend time with their adored humans.


3. Bloodhound


Big brain to body ratio, their noses are so great that their tracking is considered acceptable evidence in court!

For the owner; however, these big hounds need good exercise and firm training just like another active breed.

Bloodhounds as known are from Western Europe about a thousand years ago.

Credit for the development of the dog goes to high-ranking members of the pre-reformation church.


4. Bernese Mountain Dog

Bernese Mountain Dog

Their fluffy coats are more than just adorable — the Bernese thrive in extremely cold climates, like their native Swiss Alps.

While friendly to others, these breeds tend to bond primarily with just one person.



The Bernese mountain breed is a very large, heavy dog with a unique tri-colored coat, black with some white chest and slight rust-colored markings above eyes, front of legs, sides of the mouth.


Height and weight ranges

Males are about 25–27.5 in (64–70 cm), while female breeds are 23–26 in (58–66 cm).

Weight is about 80–120 lb (35–55 kg) for the male breed, while it is only 75–100 lb (35–45 kg) for females.


5. Anatolian Shepherd

Anatolian Shepherd

Despite their misleading name, Anatolians are bred as real guard dogs, not herders.

They can be so protective and quite territorial but still cool and affectionate with their families.

The Anatolian Shepherd breed is a native of Turkey, where they were bred as a remarkable shepherd’s companion and livestock guardian.

They were created with some traits to resemble the color and size of livestock they defended so predators would not detect them among the flock.


Also called the Anatolian Karabash Dog or Kangal, they’re a unique loyal guard dog and a large, impressive dog breed, frequently weighing 120 to 150 pounds at maturity.

Novice pet parents beware.

Not only are dogs of this breed big; they’re well known to be stubborn.

Anatolian Shepherd Dogs require consistent trainers with experience handling dogs.


6. Akita


These instinctual, strong-willed, and powerful hunting dogs are not for first-time dog owners.

They’re so protective and defensive of their families.

But they’re quite suitable for well-behaved children if they are raised with them (and supervised by parents and adults).

The Akita is a big and powerful dog breed with an intimidating and noble presence.

They were initially used for guarding some royalty and rich nobility in feudal Japan.


These dogs also tracked and have hunted boar, black bear, and sometimes deer.

The Akita does not back down from problems and does not frighten so easily.

Consequently, they are powerful, fearless, and loyal guardians of their entire families.

Yet they are also quite affectionate, respectful, and amusing when trained and socialized.


7. Cane Corso

Cane Corso

Cane Corsi, also known as Italian Mastiffs, can be intimidating guards that need lots of exercise and a strong hand.

With some right training; however, these weird canines will bond with their entire families, including children.


8. Dogo Argentino

Dogo Argentino

This Argentinian breed is primarily known as a pack-hunter, but a happy breed and friendly demeanor have made it popular outside of the South American continent.


9. Komondor


Just like the Puli breed, the Komondor looks like a mop more than a dog.

But underneath the thick white cords lies a loyal pup and brave.

The distinct and unusual appearance serves a vital purpose too: It is very warm insulation in sheepdog’s native country of Hungary.

They are affectionate with their families; these dogs are so intelligent and they are also eager to please.

Because they are so protective, they make good, decent and watchdogs and they will bark if anything is amiss.


They are not well-suited for apartment life and they prefer to have lots of room to run and burn off their energy.

For a big home in need of a loving, good, guardian, this may be the dog for the job.


10. Dogue de Bordeaux

Dogue de Bordeaux

You will recognize these lovable sidekick dogs from the Tom Hanks movie Turner and Hooch, but off the entire silver screen, these breeds also called French mastiffs are just as eager to please.

They are also courageous and loyal but not aggressive.



Learn More:

Dog Breeds That Look Like Corgis



11. Great Dane

Great Dane

Great Dane is so gentle and loving, this breed is quite excellent for kids.

This breed is alert guards but they are not overly aggressive.

They are moderately intelligent but very stubborn and they are not easily trained.


12. The Great Pyrenees

The Great Pyrenees

This spectacular watchdog makes friends very slowly and is wary of strangers.

Because of this, it’s best used as a one-family dog. It moves very quietly with slow, deliberate movements, but it will willingly pull carts or carry a pack for you.


13. Irish Wolfhound

Irish Wolfhound

As one of the tallest breeds, Wolfhounds may look so imposing, but they are the definition of a calm giant.

This dog gets along with kids.


14. Kuvasz


An old Tibetan breed, only the nobility was allowed to own these fine snow-white guard dogs.

Today, persistent training is important than a royal bloodline.

Modern owners of Kuvasz need to teach the dog about the difference between a true threat and an unusual event.


15. Leonberger


Affectionate and calm might be an understatement — Leos breed want to be with their families at all times!

These fine companions have the potential to be great therapy dogs, but probably not lap dogs.

They can weigh up to about 160 pounds.


16. Mastiff

english mastiff

These homebodies breed love their surroundings and family, and they will protect them with their lives if need be.

The Mastiff breed is willing to please and of help as soon as it figures out what humans want.

Some tend to be so shy, and they do react by biting.

They are designed to be protective guard dogs.

Not for immature pet owners, this 150-pound canine is both strong and powerful.


17. Newfoundland


This fine and a lovable dog was the initial model for the nursemaid dog in Peter Pan.

Newfoundlands love children of different ages and are so intelligent with a powerful desire to please.


18. Rottweiler


RottweilerThe dignified breed is very slow to anger, Rottweilers are very trustworthy around children if raised with them.

They have great courage, obedient, and moderately intelligent.


19. Saint Bernard

Saint Bernard

They are gentle and very tolerant, especially with children.

Saint Bernard does not fawn over strangers and they can be used as a watchdog.


20. Tibetan Mastiff

Tibetan Mastiff

Potential adopters, be warned.

Tibetan Mastiffs are notorious for not coming when called, plus they have a (destructive) fondness for wood.

They are devoted, intelligent, not to mention seriously adorable.


21. Reagle

Image. Reddit

The Reagle is a medium-sized mixed dog breed, it is the result of a cross between the Beagle and Rottweiler.

These dogs have a compact build with the behavior of Beagles, they’re lovable and affectionate creatures.

Reagle does not have the antisocial attribute you may see in some Rottweilers, they’re gentle and quite loyal.


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A pet owner who loves to share useful facts and information about a variety of animals.