What Is the Biggest Dog Breed? 12 Giants Ranked by
What is the biggest dog breed? We rank 12 giant breeds by height, weight, temperament, and cost to help you choose the right gentle giant for your home.
How We Decided: Selection Criteria for the Biggest Dog Breeds
When people ask "what is the biggest dog breed?" they're usually measuring in two ways: height at the shoulder and overall body mass. Those two metrics don't always point to the same winner. An Irish Wolfhound towers over most breeds but weighs less than a stockier English Mastiff. To give you a complete picture, this list ranks breeds using a composite approach:
- Minimum weight threshold: Males must average at least 90 lb (41 kg) per AKC breed standards.
- Minimum height threshold: Males must stand at least 26 inches (66 cm) at the withers.
- Recognized breed status: Must be fully recognized by the AKC, FCI, or UKC (no experimental crosses).
- Temperament viability: Must be suitable for experienced pet owners — not exclusively working/guard dogs requiring specialist handlers.
- Accessibility: Must have a realistic adoption or breeder network in the US.
We excluded breeds like the Caucasian Shepherd and Central Asian Ovcharka — massive dogs, but their intense livestock-guardian instincts and limited US breeder networks make them poor fits for most households researching this topic.
Below, breeds are grouped logically: first by height-dominant giants (tallest at the shoulder), then by mass-dominant giants (heaviest overall), and finally by balanced giants (breeds that score high in both). Each entry explains exactly why it earned its spot.
The Tallest Giants: Breeds That Tower Above the Rest
1. Irish Wolfhound
Size Class: Extra-Tall Sighthound | Male Height: 32–34 in (81–86 cm) | Male Weight: 120–160 lb (54–73 kg)
Key Trait: Tallest breed in the world by shoulder height.
The Irish Wolfhound holds the height crown. Originally bred to hunt wolves and elk in medieval Ireland, these dogs stand over 32 inches at the shoulder — some males exceed 34 inches. Despite their imposing frame, they're famously gentle, earning the nickname "gentle giant" for good reason. They're calm indoors but need a securely fenced yard (minimum 6-foot fence) for safe off-leash running, as their sighthound prey drive will send them chasing anything that moves.
Why it made the list: If your definition of "biggest" means tallest, no breed surpasses the Irish Wolfhound. They're the benchmark for vertical size.
2. Great Dane
Size Class: Extra-Tall Working | Male Height: 30–32 in (76–81 cm) | Male Weight: 140–175 lb (64–79 kg)
Key Trait: Second-tallest breed, combining height with moderate mass.
Great Danes blend height and substance better than almost any breed. They're slightly shorter than Wolfhounds but carry more muscle. The AKC breed standard calls for males at least 30 inches at the shoulder. Known for their affectionate, people-oriented temperament, Danes often think they're lap dogs — which is adorable and impractical at 160 lb. They adapt surprisingly well to apartment living if exercised daily, though a home with yard space is ideal.
Why it made the list: Great Danes offer the tallest possible dog that's also widely available, family-friendly, and well-suited to pet life.
3. Scottish Deerhound
Size Class: Tall Sighthound | Male Height: 30–32 in (76–81 cm) | Male Weight: 85–110 lb (39–50 kg)
Key Trait: Third-tallest breed, with a leaner, lighter build than the top two.
Scottish Deerhounds are the quiet aristocrats of the giant breed world. Bred to chase red deer across the Scottish Highlands, they share the Wolfhound's silhouette but are noticeably lighter-boned. They're reserved with strangers but deeply bonded to their families. Males stand 30–32 inches tall, though their weight (85–110 lb) is lower than other giants, which is why they rank third in height but don't appear in the mass-dominant group.
Why it made the list: For owners who want exceptional height without the 150+ lb weight commitment, the Deerhound is a practical tall breed.
The Heaviest Giants: Breeds Built for Mass
4. English Mastiff
Size Class: Extra-Heavy Working | Male Height: 30+ in (76+ cm) | Male Weight: 160–230 lb (73–104 kg)
Key Trait: Heaviest breed in the world by average body mass.
If "biggest" means sheer weight, the English Mastiff wins without contest. Males routinely exceed 200 lb (91 kg), and the breed holds the Guinness record for heaviest dog — an English Mastiff named Zorba weighed 343 lb (156 kg). Despite their bulk, Mastiffs are low-energy, calm companions who need only moderate daily walks. They drool heavily, snore loudly, and require orthopedic beds (budget $150–$300 for an XXL-rated model like the Big Barker 7" Orthopedic Dog Bed). Their lifespan is unfortunately short: 6–10 years.
Why it made the list: By pure mass, no breed competes. The English Mastiff is the definitive answer if weight is your measure of "biggest."
5. Saint Bernard
Size Class: Heavy Working | Male Height: 28–30 in (71–76 cm) | Male Weight: 140–180 lb (64–82 kg)
Key Trait: One of the heaviest breeds with a family-friendly, patient temperament.
Saint Bernards were originally bred for Alpine rescue in the Swiss Alps, and their thick double coats and powerful builds reflect that heritage. Males average 140–180 lb with substantial bone. They're exceptionally patient with children, making them one of the most popular giant breeds for families. Be prepared for heavy shedding, significant drool, and a need for climate control — they overheat easily in temperatures above 75°F (24°C).
Why it made the list: Saint Bernards combine top-five mass with one of the most reliable family temperaments among giant breeds.
6. Boerboel
Size Class: Heavy Mastiff-Type | Male Height: 24–27 in (61–69 cm) | Male Weight: 150–200 lb (68–91 kg)
Key Trait: Dense muscular build delivering exceptional weight in a shorter frame.
The Boerboel (South African Mastiff) is a powerhouse. Though slightly shorter than some breeds on this list, their muscle density pushes males to 150–200 lb. Bred as farm guardians in South Africa, they're confident, territorial, and require experienced handlers. Early socialization (before 16 weeks) and positive reinforcement training are non-negotiable. They're not recommended for first-time dog owners.
Why it made the list: The Boerboel's weight-to-height ratio is among the highest of any breed, earning it a spot for mass-dominant rankings.
7. Newfoundland
Size Class: Heavy Working | Male Height: 28 in (71 cm) | Male Weight: 130–150 lb (59–68 kg)
Key Trait: Heavy, water-resistant build with legendary swimming ability and rescue instinct.
Newfoundlands are massive, web-footed dogs originally bred for water rescue off the Canadian coast. Males average 130–150 lb under a thick, water-repellent double coat that makes them look even larger. Their temperament is exceptional — patient, gentle, and famously protective of children. They need regular grooming (budget $80–$120 per professional session every 6–8 weeks) and access to water if possible, as swimming is their favorite activity.
Why it made the list: The Newfoundland's combination of heavy mass and outstanding family temperament makes it one of the most livable giant breeds.
Balanced Giants: Breeds That Score High in Height AND Weight
8. Leonberger
Size Class: Large Working | Male Height: 28–31.5 in (71–80 cm) | Male Weight: 110–170 lb (50–77 kg)
Key Trait: Balanced proportions with both substantial height and weight.
Leonbergers were created in 19th-century Germany by crossing Saint Bernards, Newfoundlands, and Great Pyrenees — essentially combining three giant breeds into one. The result is a dog that scores well in both height and mass. Males stand up to 31.5 inches and weigh up to 170 lb. They're versatile working dogs who excel in water rescue, carting, and therapy work. Their mane-like ruff gives them a lion-like appearance (the breed is named after the city of Leonberg).
Why it made the list: Leonbergers offer near-top-tier measurements in both dimensions, making them a "complete package" giant breed.
9. Neapolitan Mastiff
Size Class: Heavy Mastiff-Type | Male Height: 26–31 in (66–79 cm) | Male Weight: 150–200 lb (68–91 kg)
Key Trait: Massive loose-skinned guardian with ancient Roman lineage.
The Neapolitan Mastiff is an ancient Italian breed recognizable by its loose, wrinkled skin and enormous head. Males stand 26–31 inches and weigh 150–200 lb. They're calm, steady, and intensely loyal to their families, but their protective instincts require structured socialization. They drool prodigiously and are prone to skin fold infections that need regular cleaning. Not a breed for casual owners.
Why it made the list: The Neapolitan Mastiff's combination of height range and extreme mass earns it a spot among the world's biggest breeds.
10. Tibetan Mastiff
Size Class: Heavy Guardian | Male Height: 26+ in (66+ cm) | Male Weight: 90–150 lb (41–68 kg)
Key Trait: Thick-coated mountain guardian that looks larger than its actual weight.
Tibetan Mastiffs are ancient Himalayan guardians with a dense double coat that adds significant visual bulk. While males weigh 90–150 lb (moderate for this list), their coat and bone structure make them appear far larger. They're independent, nocturnal, and vocal — traits from centuries of solo livestock guarding. They require experienced owners who understand primitive breed behavior and can commit to early, extensive socialization.
Why it made the list: Their perceived size, heavy bone, and guardian heritage make them a legitimate contender in any "biggest breed" conversation.
11. Bernese Mountain Dog
Size Class: Large Working | Male Height: 25–27.5 in (64–70 cm) | Male Weight: 80–115 lb (36–52 kg)
Key Trait: Sturdy Swiss farm dog with exceptional family compatibility despite shorter stature.
Bernese Mountain Dogs are slightly shorter than most breeds on this list, but their dense, heavily boned build pushes males to 80–115 lb. They're included here because their overall physical presence — broad chest, thick coat, substantial frame — reads as genuinely large. More importantly, they're among the most popular giant breeds in the US due to their friendly, biddable temperament. Their major drawback is lifespan: 6–8 years on average, with high cancer rates.
Why it made the list: The Berner's combination of solid mass, visual impact, and extraordinary popularity among giant-breed seekers justifies inclusion.
12. Anatolian Shepherd Dog
Size Class: Tall Guardian | Male Height: 29+ in (74+ cm) | Male Weight: 110–150 lb (50–68 kg)
Key Trait: Tall, athletic livestock guardian with endurance-based build.
Anatolian Shepherds are Turkish livestock guardians that stand 29+ inches at the shoulder and weigh up to 150 lb. Unlike mastiff-type breeds, they're athletic and agile — built to patrol large territories rather than confront predators head-on. They're fiercely independent, territorial, and not naturally suited to casual suburban life. They require large fenced properties (minimum 1 acre) and owners experienced with guardian breeds. Note: local breed-specific legislation may apply in some jurisdictions — check your local laws.
Why it made the list: The Anatolian's height and functional mass make it one of the tallest and most physically capable giant breeds.
Side-by-Side: How All 12 Breeds Compare
| Breed | Male Height | Male Weight | Lifespan | Family Fit | Avg. Puppy Cost |
|---|---|---|---|---|---|
| Irish Wolfhound | 32–34 in | 120–160 lb | 6–8 yr | ★★★★☆ | $1,500–$2,500 |
| Great Dane | 30–32 in | 140–175 lb | 7–10 yr | ★★★★★ | $1,500–$3,000 |
| Scottish Deerhound | 30–32 in | 85–110 lb | 8–11 yr | ★★★☆☆ | $2,000–$3,500 |
| English Mastiff | 30+ in | 160–230 lb | 6–10 yr | ★★★★☆ | $1,500–$2,500 |
| Saint Bernard | 28–30 in | 140–180 lb | 8–10 yr | ★★★★★ | $1,500–$3,000 |
| Boerboel | 24–27 in | 150–200 lb | 9–11 yr | ★★☆☆☆ | $2,000–$4,000 |
| Newfoundland | 28 in | 130–150 lb | 9–10 yr | ★★★★★ | $1,500–$2,500 |
| Leonberger | 28–31.5 in | 110–170 lb | 7–9 yr | ★★★★☆ | $1,800–$3,000 |
| Neapolitan Mastiff | 26–31 in | 150–200 lb | 7–9 yr | ★★☆☆☆ | $2,500–$5,000 |
| Tibetan Mastiff | 26+ in | 90–150 lb | 10–12 yr | ★★☆☆☆ | $2,500–$6,000 |
| Bernese Mountain Dog | 25–27.5 in | 80–115 lb | 6–8 yr | ★★★★★ | $2,000–$3,500 |
| Anatolian Shepherd | 29+ in | 110–150 lb | 11–13 yr | ★★☆☆☆ | $1,000–$2,000 |
Family Fit ratings are based on breed temperament assessments from the AKC and general suitability for households with children and other pets. Puppy costs reflect 2025–2026 US breeder averages for health-tested, AKC-registered litters.
Honorable Mentions & Breeds to Approach With Caution
Several breeds were considered but didn't meet our selection criteria, or they carry specific challenges worth flagging:
Honorable Mentions (just missed the cut):
- Great Pyrenees: Males reach 100–160 lb and 27–32 inches — genuinely large. They missed the list because their independent guardian temperament and heavy nighttime barking make them a challenging fit for many households researching "biggest breeds" as casual pet seekers.
- Dogue de Bordeaux: Males weigh 110–150 lb at 23–27 inches. Stocky and powerful, but their shorter height and brachycephalic (short-faced) health challenges — including brachycephalic obstructive airway syndrome (BOAS) — limit their practicality.
- Cane Corso: Males reach 100–120 lb at 25–27.5 inches. Impressive dogs, but their weight falls slightly below our 90+ lb minimum when you factor in females, and they require experienced handlers.
Breeds to Approach With Caution:
- Caucasian Shepherd (Ovcharka): Males can exceed 200 lb. However, they're intensely territorial, aggressive toward unfamiliar dogs, and poorly suited to suburban environments. They require professional-level handling experience.
- Presa Canario: Powerful dogs weighing 100–130 lb, but their strong prey drive and dog-aggression tendencies demand expert ownership. Not appropriate for families seeking a "biggest breed" as a gentle companion.
Decision Framework: Which Giant Breed Fits YOUR Life?
Choosing between the top three (Great Dane, English Mastiff, and Newfoundland — our picks for the best overall giant breeds for most households) depends on your specific situation. Use this framework:
- Apartment or townhouse with limited yard: → Great Dane. Surprisingly adaptable to smaller spaces if walked 45–60 minutes daily. Lower grooming needs than the other two.
- House with fenced yard, no extreme heat: → Newfoundland or English Mastiff. Both need space but are calm indoors.
- Rural property with acreage: → Any of the three, but consider the Leonberger or Anatolian Shepherd for working roles.
- Yes, under age 8: → Newfoundland. Their patience with children is unmatched. English Mastiffs are gentle but their sheer size (200+ lb) creates accidental knock-over risk with toddlers.
- Older children or teens: → Great Dane or English Mastiff both work well.
- Minimal grooming preferred: → Great Dane or English Mastiff. Short coats, weekly brushing.
- Don't mind heavy grooming: → Newfoundland. Requires brushing 3–4x per week and professional grooming every 6–8 weeks ($80–$120 per session).
- Great Dane: $2,500–$4,000/year (food, preventive care, pet insurance)
- English Mastiff: $3,000–$5,000/year (higher food costs due to 200+ lb weight, orthopedic care)
- Newfoundland: $3,000–$4,500/year (grooming costs add $600–$900 annually)
For a complete breakdown of giant breed ownership costs, consult your veterinarian about breed-specific preventive health protocols.
Frequently Asked Questions
What is the biggest dog breed in the world?
It depends on how you measure. By height, the Irish Wolfhound is the tallest breed, with males standing 32–34 inches at the shoulder. By weight, the English Mastiff is the heaviest, with males averaging 160–230 lb and some individuals exceeding 250 lb. The Great Dane comes closest to combining both — tall at 30–32 inches and heavy at 140–175 lb.
Is the Great Dane bigger than the Mastiff?
The Great Dane is typically taller but the English Mastiff is significantly heavier. A male Great Dane stands 30–32 inches and weighs 140–175 lb, while a male English Mastiff stands 30+ inches but weighs 160–230 lb. The Mastiff's broader, denser build gives it a 30–50 lb weight advantage despite similar height.
Are giant dog breeds good with children?
Many giant breeds — especially Newfoundlands, Great Danes, Saint Bernards, and Bernese Mountain Dogs — are famously patient and gentle with children. However, any dog over 100 lb can accidentally knock over a toddler, so supervision is essential. Early socialization and positive reinforcement training for both the dog and children are critical. Never leave any giant breed unsupervised with children under 5.
How much does it cost to own a giant dog breed?
First-year costs for a giant breed typically range from $4,000–$8,000 including puppy purchase, initial veterinary care, spay/neuter (which costs more for giant breeds — $400–$800 vs. $200–$400 for smaller dogs), crate, bed, and supplies. Ongoing annual costs run $2,500–$5,000 depending on the breed, with food being the largest variable expense. Giant breeds eat 6–12 cups of premium kibble daily, costing $120–$250/month. Pet insurance for giant breeds averages $80–$150/month.
What giant breeds live the longest?
Among the breeds on this list, the Anatolian Shepherd leads with an 11–13 year lifespan, followed by the Tibetan Mastiff at 10–12 years and the Scottish Deerhound at 8–11 years. Most giant breeds live 6–10 years. Larger body mass correlates with shorter lifespan in dogs — a well-documented phenomenon in veterinary science. If longevity is a priority, lean toward the lighter giant breeds or consider a large (rather than giant) breed like the Labrador Retriever (10–12 years).
What health problems do giant dog breeds have?
Giant breeds share several health risks: hip and elbow dysplasia (malformed joints causing arthritis), dilated cardiomyopathy (DCM) (heart enlargement), gastric dilatation-volvulus (GDV or bloat) — a life-threatening stomach torsion that requires emergency surgery ($3,000–$7,000), and osteosarcoma (bone cancer). The AKC recommends that giant breed owners learn to recognize bloat symptoms and discuss prophylactic gastropexy with their veterinarian — a preventive surgery often performed during spay/neuter that tacks the stomach to the abdominal wall.
Should I get a giant breed puppy or adopt an adult?
Both are valid paths. Purchasing from a responsible breeder (one who performs OFA hip/elbow certifications, cardiac exams, and breed-specific genetic testing) gives you health history predictability. Adoption through breed-specific rescues like Great Dane Rescue or Newfoundland Rescue gives an adult dog a second chance and lets you see the dog's established temperament. Many giant breeds end up in rescue because owners underestimate their size and costs. If you adopt, budget for a veterinary exam within the first week ($150–$300) to assess any existing conditions.
Jonas Cole
All our authors care for dogs every day — read more of their work on the authors page.
