Largest Dog Breeds Ranked: 12 Gentle Giants Compared for 2026
Which is the largest dog breed? We rank 12 giant breeds by height, weight, temperament, and cost, with a decision framework to find your perfect match.
What Qualifies a Breed as the "Largest Dog Breed"?
When people search for the largest dog breed, they're usually thinking about one of two things: height at the shoulder or overall body mass. Some breeds tower over others vertically, while others pack on sheer weight and bulk. A Great Dane stands taller than almost anything on four legs, but an English Mastiff will outweigh a Dane by 40-60 pounds on average. Both legitimately claim the "largest" title depending on your metric.
- Minimum weight threshold: Breeds where adult males typically exceed 100 lb (45 kg)
- Minimum height threshold: Breeds where adult males typically stand 26+ inches (66+ cm) at the withers
- AKC or FCI recognition: Only breeds with established breed standards and health registries
- At least one metric must place them in the top tier: Either top-5 by height or top-5 by weight among recognized breeds
- Availability: Breeds that prospective owners in the US can realistically acquire through responsible breeders or rescue organizations
We evaluated 12 breeds that meet these criteria, ranking them by a composite score that weighs both height and mass. This isn't just a list of big dogs — it's a practical guide for anyone seriously considering bringing one of these animals into their home. Giant breeds come with specific challenges: higher food bills (expect $80-$180/month), shorter lifespans (7-10 years for most), and veterinary costs that scale with their size. A single emergency visit for gastric dilatation-volvulus (GDV/bloat) can run $3,000-$7,000.
The 12 Largest Dog Breeds, Ranked
We've organized these breeds into three tiers: the true giants (over 150 lb / 68 kg), the tall-and-massive class (100-150 lb with exceptional height), and the heavyweights (extreme mass with moderate height). Within each tier, breeds are ranked by their composite size score.
Tier 1: The True Giants (150+ lb / 68+ kg)
Size Class: Extreme Mass | Key Trait: Heaviest breed on record
The English Mastiff is the largest dog breed by weight. Adult males typically weigh 160-230 lb (73-104 kg) and stand 30+ inches (76+ cm) at the shoulder. The AKC breed standard calls for a minimum of 160 lb for males. Zorba, an English Mastiff, held the Guinness World Record at 343 lb (156 kg). Despite their intimidating size, Mastiffs are famously docile — the AKC describes them as "courageous, dignified, and good-natured." They drool heavily, require minimal exercise (30-45 minutes of walking daily), and are prone to hip dysplasia, elbow dysplasia, and GDV. Expect to pay $1,800-$3,500 for a puppy from a health-tested breeder.
Size Class: Extreme Mass | Key Trait: Densest muscle-to-frame ratio among mastiffs
The South African Boerboel is a working mastiff bred to guard homesteads. Males weigh 150-200 lb (68-91 kg) and stand 24-27 inches (61-69 cm). What puts the Boerboel on this list is their extraordinary bone density and muscle mass — they feel heavier than their measurements suggest. They are intensely loyal, highly protective, and require experienced owners who can provide firm, positive-reinforcement-based training from puppyhood. Boerboels are not recommended for first-time dog owners. They need structured socialization between 8-16 weeks to prevent over-protectiveness. Puppy cost: $2,000-$4,500.
Size Class: Extreme Mass | Key Trait: Heaviest working breed originally bred for Alpine rescue
Saint Bernards are the largest dog breed in the working group by overall bulk. Males weigh 140-180 lb (64-82 kg) and stand 28-30 inches (71-76 cm). Originally bred by monks at the Great St. Bernard Hospice in the Swiss Alps for search-and-rescue, these dogs carry a dense double coat, massive bone structure, and a famously gentle temperament with children. They are heavy shedders, produce significant drool, and are prone to hip dysplasia (prevalence estimated at 15-20% per OFA data), dilated cardiomyopathy, and osteosarcoma. Puppy cost: $1,500-$3,000.
Tier 2: Tall and Massive (100-150 lb / 45-68 kg, 28+ inches)
Size Class: Maximum Height | Key Trait: Tallest recognized breed
The Great Dane is the tallest dog breed in the world. Males stand 30-32+ inches (76-81+ cm) at the withers and weigh 140-175 lb (64-79 kg). Zeus, a Great Dane, held the Guinness record at 44 inches (112 cm) tall. Danes are known as "Apollo dogs" for their regal bearing and surprisingly gentle, people-oriented temperament. They are typically good with children and other dogs when properly socialized. Major health concerns include GDV (they are the breed most at risk), dilated cardiomyopathy, and wobbler syndrome. Their lifespan is notably short: 7-10 years. Puppy cost: $1,500-$3,000 from a reputable breeder.
Size Class: Tall-Massive | Key Trait: Largest of the German working breeds
The Leonberger is a striking lion-like breed from Germany. Males weigh 110-170 lb (50-77 kg) and stand 28-31.5 inches (71-80 cm). They combine the height of a Great Dane with more substantial bone and coat. Leonbergers are versatile working dogs — they've been used for water rescue, drafting, and as family companions. They are highly social, dislike being left alone for long periods, and need 60+ minutes of daily exercise. Health screenings should include hip/elbow evaluations, cardiac exams, and Leonberger polyneuropathy (LPN1/LPN2) genetic tests. Puppy cost: $2,000-$3,500.
Size Class: Heavyweight | Key Trait: Most extreme loose skin and wrinkle mass
The Neapolitan Mastiff is an ancient Italian guardian breed. Males weigh 150-200 lb (68-91 kg) and stand 26-31 inches (66-79 cm). They are defined by their massive wrinkles, loose skin (originally protective against predator bites), and imposing presence. Despite their fierce appearance, well-bred Neos are calm, steady, and deeply bonded to their families. They are not recommended for novice owners — they require early socialization, consistent positive-reinforcement training, and an owner who understands guardian breed psychology. They drool profusely, snore loudly, and are prone to cherry eye, hip dysplasia, and skin fold infections. Puppy cost: $2,500-$5,000.
Size Class: Tall-Massive | Key Trait: Largest water-rescue breed with webbed feet
Newfoundlands are working dogs bred for water rescue off the coast of Canada. Males weigh 130-150 lb (59-68 kg) and stand 28 inches (71 cm). They are uniquely adapted to cold water with a thick, water-resistant double coat, webbed feet, and an instinctive swimming ability. Newfoundlands are among the gentlest of the giant breeds — they are famously patient with children and have been called "nature's babysitter." They require 45-60 minutes of daily exercise (swimming preferred), shed heavily, and are prone to subaortic stenosis (SAS), cystinuria, and hip dysplasia. Puppy cost: $1,800-$3,000.
Size Class: Heavyweight | Key Trait: Largest of the Asian livestock guardian breeds
The Tibetan Mastiff is an ancient Himalayan guardian breed. Males weigh 90-150 lb (41-68 kg) and stand 26+ inches (66+ cm), though some individuals exceed 170 lb. They have an extraordinarily thick double coat adapted to extreme cold, a powerful build, and an independent, cat-like temperament. Tibetan Mastiffs are nocturnal by instinct (bred to guard at night), bark extensively, and are reserved with strangers. They require an owner who understands primitive breed behavior — they are not obedience-oriented and respond poorly to repetitive training. Health concerns include hypothyroidism, hip dysplasia, and canine inherited demyelinative neuropathy (CIDN). Puppy cost: $3,000-$8,000+ (prices vary dramatically by lineage).
Tier 3: The Heavyweights (100-140 lb / 45-64 kg)
Size Class: Maximum Height (Sighthound) | Key Trait: Tallest of all sighthounds
The Irish Wolfhound is the tallest sighthound and one of the tallest breeds overall. Males stand a minimum of 32 inches (81 cm) at the shoulder — many reach 34-35 inches — and weigh 120-140 lb (54-64 kg). Despite their height, they are leaner than mastiff-type breeds. Originally bred to hunt wolves and elk in Ireland, they are gentle, dignified, and surprisingly good with children. They need 45-60 minutes of exercise with access to a securely fenced area (they are sight-hunters and will chase). Major health concerns include osteosarcoma (prevalence significantly higher than average), dilated cardiomyopathy, and GDV. Lifespan is short: 6-8 years. Puppy cost: $2,000-$3,500.
Size Class: Heavyweight | Key Trait: Largest Turkish livestock guardian breed
The Anatolian Shepherd — closely related to and often grouped with the Kangal — is a Turkish livestock guardian. Males weigh 110-150 lb (50-68 kg) and stand 29+ inches (74+ cm). They are powerful, fast for their size, and intensely protective of their "flock" (which can include children and other pets). Anatolians are independent thinkers, not suited for off-leash work in unfenced areas, and require early and ongoing socialization. They are relatively healthy for a giant breed, with hip dysplasia being the primary concern. Puppy cost: $1,500-$3,000. Note: Check your local breed-specific legislation — some jurisdictions restrict livestock guardian breeds in urban settings.
Size Class: Heavyweight | Key Trait: Largest head-to-body ratio of any breed
The Dogue de Bordeaux is a powerful French mastiff. Males weigh 110-150 lb (50-68 kg) and stand 23.5-27 inches (60-69 cm). They are distinguished by their enormous head — the largest in proportion to body size of any recognized breed — and deeply wrinkled face. Dogues are loyal, calm indoors, and surprisingly low-energy for their size. They need 30-45 minutes of daily exercise. Health concerns include brachycephalic airway issues (due to their shortened muzzle), hip dysplasia, gastric dilatation-volvulus, and cardiac disease. Lifespan: 5-8 years, one of the shortest of any breed. Puppy cost: $2,000-$4,000.
Size Class: Heavyweight | Key Trait: Largest white-coated livestock guardian
The Great Pyrenees is a French mountain livestock guardian. Males weigh 100-160 lb (45-73 kg) and stand 27-32 inches (69-81 cm). They are strikingly beautiful with a thick white double coat, and they are known for being calm, patient, and gentle with their families. Great Pyrenees are independent, bark frequently (especially at night — a guardian instinct), and have a strong roaming instinct that requires secure fencing. They are relatively low-energy and do well with 30-45 minutes of daily walking. Health concerns include hip dysplasia, osteosarcoma, and GDV. Puppy cost: $1,000-$2,500 (often the most affordable giant breed).
Complete Comparison: All 12 Breeds at a Glance
| Breed | Male Weight (lb/kg) | Male Height (in/cm) | Lifespan | Exercise/Day | Puppy Cost |
|---|---|---|---|---|---|
| English Mastiff | 160-230 / 73-104 | 30+ / 76+ | 6-10 yr | 30-45 min | $1,800-$3,500 |
| Boerboel | 150-200 / 68-91 | 24-27 / 61-69 | 9-11 yr | 60+ min | $2,000-$4,500 |
| Saint Bernard | 140-180 / 64-82 | 28-30 / 71-76 | 8-10 yr | 45-60 min | $1,500-$3,000 |
| Great Dane | 140-175 / 64-79 | 30-32+ / 76-81+ | 7-10 yr | 45-60 min | $1,500-$3,000 |
| Leonberger | 110-170 / 50-77 | 28-31.5 / 71-80 | 7-9 yr | 60+ min | $2,000-$3,500 |
| Neapolitan Mastiff | 150-200 / 68-91 | 26-31 / 66-79 | 7-9 yr | 30-45 min | $2,500-$5,000 |
| Newfoundland | 130-150 / 59-68 | 28 / 71 | 9-10 yr | 45-60 min | $1,800-$3,000 |
| Tibetan Mastiff | 90-150 / 41-68 | 26+ / 66+ | 10-12 yr | 45-60 min | $3,000-$8,000+ |
| Irish Wolfhound | 120-140 / 54-64 | 32-35 / 81-89 | 6-8 yr | 45-60 min | $2,000-$3,500 |
| Anatolian Shepherd | 110-150 / 50-68 | 29+ / 74+ | 11-13 yr | 60+ min | $1,500-$3,000 |
| Dogue de Bordeaux | 110-150 / 50-68 | 23.5-27 / 60-69 | 5-8 yr | 30-45 min | $2,000-$4,000 |
| Great Pyrenees | 100-160 / 45-73 | 27-32 / 69-81 | 10-12 yr | 30-45 min | $1,000-$2,500 |
Why These Breeds Made the List (and Others Didn't)
Each breed above was selected because it demonstrably ranks in the top tier by weight, height, or both. Here's the ranking rationale for breeds that commonly come up in "largest dog breed" discussions but didn't qualify:
Honorable Mentions:
- Bernese Mountain Dog: Males reach 80-115 lb (36-52 kg) and 25-27.5 inches — large, but below our 100+ lb minimum for most males. A wonderful breed, but solidly in the "large" rather than "giant" category.
- Bullmastiff: Males weigh 110-130 lb (50-59 kg) and stand 25-27 inches. They qualify on weight but fall short on height. Included on many "giant breed" lists, but our criteria require at least one top-tier metric.
- Cane Corso: Males weigh 100-110 lb (45-50 kg) and stand 25-27.5 inches. A powerful breed, but their weight range puts them at the lower boundary of giant classification.
- Scottish Deerhound: Males stand 30-32 inches but weigh only 85-110 lb — very tall but too lean to meet the mass criteria.
Breeds to Approach with Caution (Not Necessarily "Avoid," But Know What You're Getting Into):
- Caucasian Shepherd (Ovcharka): Males can exceed 170 lb and 30 inches, but this breed is extremely rare in the US, has intense guardian instincts, and is not recommended for suburban environments. Limited US breed club infrastructure means fewer health-tested breeders.
- Fila Brasileiro: Extremely large (90-180 lb) but banned or restricted in many countries. Not recognized by the AKC. Their temperament requires expert-level handling, and breed-specific legislation may apply in your area.
Decision Framework: Which Giant Breed Fits Your Life?
Choosing the largest dog breed for your home isn't just about size — it's about matching the breed's temperament, energy level, and care requirements to your lifestyle. Here's a practical decision framework focused on the top three breeds that suit the widest range of owners:
- You want maximum size with minimum exercise demands (30-45 min walking)
- You live in a house with a yard but don't need an athletic companion
- You can tolerate heavy drooling and are okay with a couch-potato dog
- You have children and want a gentle, patient temperament
- Trade-off: Shortest lifespan among the top choices (6-10 years), highest food costs ($120-$180/month)
- You want maximum height and a more athletic, elegant build
- You enjoy 45-60 minutes of daily walking and occasional hiking
- You want a people-oriented, friendly dog that does well in social settings
- You can commit to prophylactic gastropexy surgery (reduces GDV risk — discuss with your vet, typical cost $500-$1,500 at time of spay/neuter)
- Trade-off: Highest GDV risk of any breed, very short lifespan (7-10 years), needs a home with space for their height (doorways, vehicles)
- You want a giant breed that excels with children and families
- You have access to water (lakes, pools, beaches) and enjoy outdoor activities
- You want a dog with a longer lifespan for a giant breed (9-10 years)
- You don't mind heavy shedding and regular grooming (2-3 brushing sessions per week)
- Trade-off: Heavy shedding year-round with seasonal blowouts, high grooming needs, prone to drool, needs regular swimming or water access for mental stimulation
- Food: $960-$2,160/year (6-15 cups/day of quality kibble at $1.50-$3.00/lb)
- Preventive medications: $400-$800/year (heartworm, flea/tick — doses are weight-based)
- Routine veterinary care: $500-$900/year (exams, bloodwork, vaccines)
- Emergency fund: Set aside $2,000-$5,000 for GDV, orthopedic issues, or cardiac events
- Total first-year cost: $4,000-$9,000 (including puppy purchase, supplies, spay/neuter, initial vet visits)
Always consult your veterinarian for breed-specific health screening recommendations and preventive care plans.
Frequently Asked Questions
What is the largest dog breed in the world?
By weight, the English Mastiff is the largest dog breed, with males reaching 230+ lb (104+ kg). By height, the Great Dane is the tallest, with males regularly exceeding 32 inches (81 cm) at the shoulder. The answer depends on which metric you prioritize. For overall combined size (both height and mass), the English Mastiff and Saint Bernard are the top contenders.
Are giant dog breeds good with children?
Many giant breeds — particularly the Newfoundland, English Mastiff, Saint Bernard, and Great Dane — are excellent with children when properly socialized. Their calm, patient temperaments make them tolerant of children's behavior. However, their sheer size is a safety concern: a 150 lb dog can accidentally knock over a toddler simply by turning around. Always supervise interactions between giant breeds and small children, and teach children to respect the dog's space.
How much does it cost to own the largest dog breeds?
Expect to spend $4,000-$9,000 in the first year (including puppy purchase, supplies, veterinary care, and spay/neuter) and $2,500-$5,000 annually thereafter. Food alone costs $80-$180 per month for most giant breeds. Emergency veterinary care for breed-specific conditions like GDV can cost $3,000-$7,000 per incident. Pet insurance for giant breeds typically runs $70-$150/month depending on coverage level and the dog's age at enrollment.
Do the largest dog breeds need a big house?
Surprisingly, many giant breeds are relatively low-energy indoors and can adapt to apartment living — provided they get adequate daily exercise. The English Mastiff and Dogue de Bordeaux are notably calm indoors. However, you do need space for their physical size: oversized beds (48"+ long), XL crates (48-54"), vehicle access for transport (SUVs or wagons with fold-flat seats), and doorways they can pass through without ducking. A fenced yard is strongly recommended for most giant breeds.
Which giant breed has the longest lifespan?
Among the breeds on this list, the Anatolian Shepherd Dog (11-13 years) and Tibetan Mastiff (10-12 years) tend to live the longest. The Great Pyrenees also averages 10-12 years. The shortest-lived breeds are the Dogue de Bordeaux (5-8 years) and Irish Wolfhound (6-8 years). In general, giant breeds age faster and have shorter lifespans than smaller dogs — a trade-off to consider seriously before committing.
Robin Maitland
All our authors care for dogs every day — read more of their work on the authors page.
