When picturing a lovable canine companion, many people imagine a pint-sized pup curled up on the couch. But for some dog lovers, bigger truly is better. The world’s largest dog breeds offer not just towering stature and hefty weight, but also heartwarming loyalty, gentle temperaments, and striking presence. These giants of the canine world may outweigh an average adult and stretch taller than your kitchen counter, but beneath their massive frames lie affectionate, devoted souls.
Throughout history, many of these large breeds were developed for practical purposes, whether it was pulling carts, guarding livestock, or rescuing stranded travelers from snow-covered mountains. Their size wasn’t just for show; it served as an asset for survival, strength, and protection.
In this article, we’ll take a closer look at some of the most colossal canines on the planet, exploring the traits, history, and charm that make these gentle giants such beloved companions around the world.
World’s Largest Dog Breeds
1. Irish Wolfhound
When it comes to towering stature, the Irish Wolfhound stands above the rest, literally. Known as the tallest dog breed, this ancient sighthound was originally bred in Ireland for hunting wolves and protecting people and livestock.
Despite their formidable size, Irish Wolfhounds are calm, sensitive, and deeply affectionate, making them gentle companions in modern homes. Their impressive height and reserved nature lend them an air of quiet nobility.
Appearance
The most striking feature of these affectionate dogs is their extraordinary height. Males typically stand at least 32 inches at the shoulder, and when up on their hind legs, they can measure over 7 feet tall. Weighing between 105 and 120 pounds, they have a lanky yet powerful build covered in a rough, wiry coat that comes in shades like gray, brindle, and fawn.
WebMD indicates that the breed is recognized in more than 10 official colors according to the breed standard. While grey is perhaps the most familiar, there are several other accepted colors as well. Their long legs, deep chest, and slightly arched back reflect their origins as coursing dogs bred for speed and strength.
Fact: Although bred to pursue wolves, today’s Irish Wolfhounds are known more for their affectionate, docile nature and are often lovingly referred to as “gentle giants” of the dog world.
2. Leonberger
Among the biggest dog breeds, the majestic Leonberger stands out not only for its size but also for its dignified presence and affectionate nature. Bred in 19th-century Germany to resemble a lion, this breed was developed by crossing Newfoundlands, Saint Bernards, and Pyrenean Mountain Dogs.
AKC describes the Leonberger as a friendly, playful, and gentle breed. The result is a powerful, noble working dog that’s equally content guarding a property or snuggling on the couch, though it may take up most of it. Calm and intuitive, Leonbergers make excellent family companions and excel in everything from water rescue to herding.
Appearance
The Leonberger’s commanding frame ranges from 25.5 to 31.5 inches in height and up to 170 pounds in weight. Males often display a lion-like mane around the neck and chest, contributing to their regal look.
Their thick, medium-long waterproof coat comes in golden, red, or sandy hues, always paired with a black facial mask. With expressive brown eyes, bushy tails, and a strong, muscular build, Leos carry themselves with a fluid, easy gait that complements their impressive stature.
Fact: Despite their size, these guard dogs are gentle, family dogs that were originally bred to resemble lions and are known for their keen intelligence and affectionate hearts.
3. Newfoundland
The Newfoundland stands out not just for its size but for its legendary strength and gentle temperament. Originally developed on the island of Newfoundland, this giant working breed was bred to assist fishermen, hauling nets, pulling carts, and famously rescuing people from the water. Britannica notes that, similar to many giant breeds, the Newfoundland is generally calm and laid-back.
It is loving and playful with almost everyone, including strangers, other dogs, and household pets. With their innate swimming ability, Newfoundlands are often described as natural-born lifeguards and are known for their loyalty and protective instincts, especially around children.
Appearance
Massive and muscular, Newfoundlands typically weigh between 100 and 150 pounds and stand 26 to 28 inches tall. Their impressive bulk is further emphasized by their thick, water-resistant double coat, which helps insulate them in cold climates and icy waters.
They have broad heads, expressive eyes, large webbed feet, and powerful hindquarters, traits that make them exceptional swimmers. Coat colors include black, brown, gray, and the black-and-white Landseer variety.
Fact: A Newfoundland named Seaman accompanied Lewis and Clark on their historic expedition, while another reportedly saved Napoleon Bonaparte from drowning, testaments to the breed’s bravery and enduring legacy as a life-saving giant.
4. Saint Bernard
Few breeds embody the term “gentle giant” as perfectly as the Saint Bernard. Originally bred by monks in the Swiss Alps for avalanche search-and-rescue missions, this massive yet mellow breed has transitioned from lifesaving hero to devoted family companion.
Despite their size, Saint Bernards are famously patient and affectionate, particularly with children, making them ideal for households with the space and strength to handle such a large dog.
Appearance
Standing 26 to 30 inches tall and weighing between 120 and 180 pounds, the Saint Bernard is a true heavyweight in the canine world. Their broad head, expressive eyes, and muscular build give them a noble and powerful appearance, softened by their calm demeanor.
These dogs have thick, dense coats, either short or long, that protect them in cold climates. Their classic coloration includes white with red, orange, or brindle patches, often paired with a dark mask that enhances their soulful gaze.
Fact: Saint Bernards became legendary for their role as Alpine rescue dogs, often navigating treacherous snowfields to locate stranded travelers, cementing their reputation as compassionate, capable giants.
5. Dogue de Bordeaux
Among the tallest breeds, the Dogue de Bordeaux, also known as the French Mastiff, commands attention with its massive build and even more impressive head. Believed to be one of France’s oldest dog breeds, the Dogue has historically served a variety of roles, from guarding estates and pulling carts to protecting livestock.
Despite its imposing stature, this breed is known for being deeply affectionate and steadfastly loyal to its family.
Appearance
With a height of 23 to 27 inches and a weight that typically exceeds 99 pounds, the Dogue de Bordeaux has a stocky, muscular frame that exudes strength. Its most notable feature is its massive head, the largest of any breed in proportion to its body.
The short, fine coat comes in rich tones of fawn, red, mahogany, or isabella, sometimes with a black or brown mask and white patches. Deep facial wrinkles, a broad chest, and expressive eyes add to this breed’s signature look.
Fact: The Dogue de Bordeaux gained pop culture fame alongside Tom Hanks in Turner and Hooch, but in real life, this powerful yet mellow breed is revered for its gentle demeanor and unwavering devotion.
6. Neapolitan Mastiff
Originating in southern Italy, these imposing guardians were bred for protection and intimidation—traits they still carry today. Despite their tough exterior, Neapolitan Mastiffs are known to be calm, gentle giants with their families.
However, their sheer strength and strong guarding instincts make them a better match for experienced dog owners who can dedicate time to training and socialization.
Appearance
This giant dog is unmistakable, with its deeply wrinkled skin, loose jowls, and broad, muscular frame. Males typically weigh around 150 pounds and can stand up to 31 inches tall, while females are slightly smaller.
Their massive heads are adorned with heavy folds, giving them a look that’s both prehistoric and majestic. A short, dense coat in shades like gray, black, mahogany, or tawny adds to their regal yet rugged appearance.
Fact: The Neapolitan Mastiff rarely barks; this silent sentinel prefers to surprise intruders, making it a powerful protector whose look alone is often enough to keep strangers at bay.
7. Scottish Deerhound
Graceful yet powerful, the Scottish Deerhound earns its place among the world’s largest dog breeds with its towering height and noble heritage. Bred in ancient Scotland to chase and bring down red deer, this breed combines athleticism with a calm, gentle nature.
Though no longer used for hunting, Deerhounds continue to impress in dog shows and lure coursing events, and they make devoted, relaxed companions in the home.
Appearance
Often described as a rough-coated cousin of the Greyhound, the Scottish Deerhound has a long, lean frame built for speed and endurance. Males can reach up to 32 inches at the shoulder and weigh as much as 110 pounds.
Their wiry, crisp coat, often favored in a dark blue-gray hue, adds to their rugged charm, while a long neck and narrow, tapered head give them an elegant silhouette. Despite their size, they move with effortless grace.
Fact: Though they resemble a scruffier, more robust version of the Greyhound, Scottish Deerhounds are even larger and were once prized by Scottish nobility for their ability to hunt the majestic red deer.
Conclusion
From the towering Irish Wolfhound to the majestic Scottish Deerhound, the world’s largest dog breeds are as impressive in stature as they are in loyalty and companionship. Bred across centuries for specialized tasks, from guarding property to assisting in hunts, these gentle giants have earned their place not just in history but in the hearts of dog lovers around the globe.
Many of these massive breeds, like the Anatolian Shepherd Dog and Great Pyrenees, were developed as dependable farm dogs, tasked with protecting livestock and property in rugged terrains. Others, like the Scottish Deerhound, were once prized for their ability to hunt red deer with strength and grace. Even the affectionate Bernese Mountain Dog, with its thick double coat, was bred to work hard in cold climates while remaining a loving family companion.
And let’s not forget lesser-known titans like the Black Russian Terrier, a powerful and intelligent breed originally created for military and guard work. Though their sizes may seem daunting, these dogs often have calm, even-tempered personalities that make them incredible companions, if you’ve got the space (and the sofa) to share.
