10 Enormous Dog Breeds Ranked by Size, Temperament, and...
Discover 10 enormous dog breeds ranked by weight, temperament, exercise needs, and annual costs.
What Qualifies as an Enormous Dog Breed?
Not every large dog earns the "enormous" label. For this guide, we applied strict selection criteria drawn from American Kennel Club breed standards and veterinary body condition data. A breed must meet at least two of the following three thresholds to qualify:
Selection Criteria for Enormous Dog Breeds
- Minimum adult male weight: 100 lb (45 kg) or more at healthy body condition score (BCS 4-5/9)
- Minimum shoulder height: 25 inches (63.5 cm) at the withers
- Breed group classification: Recognized by AKC, FCI, or UKC as a giant or large working/guardian breed with documented historical use in draft, livestock protection, or estate guarding
Breeds that fall below these thresholds — such as Golden Retrievers or standard Poodles — are wonderful dogs but do not qualify as truly enormous. We also excluded breeds with extreme health compromises that make responsible ownership nearly impossible for most households (e.g., severely brachycephalic giants).
Enormous dog breeds share more than raw size. They tend to have slower metabolic rates per pound than smaller breeds, reach skeletal maturity later (18–36 months versus 12 months for medium breeds), and carry breed-specific orthopedic risks that directly affect lifetime care costs. Understanding these traits upfront prevents the most common mistake we see: families choosing a giant breed based on puppy cuteness without budgeting for the 8–12 years of specialized care ahead.
The 10 Best Enormous Dog Breeds Ranked
We evaluated each breed across five dimensions: adult size, temperament stability, exercise requirements, family compatibility, and realistic annual ownership costs. Breeds are grouped into three tiers by lifestyle fit rather than ranked strictly by weight, because the "best" enormous breed depends entirely on your living situation.
Tier 1: Best for Active Families With Space
1. Great Dane
Size class: Giant — Males 140–175 lb (64–79 kg), 30–32 in (76–81 cm) | Females 110–140 lb (50–64 kg), 28–30 in (71–76 cm)
Key trait: Tallest of all enormous breeds; surprisingly gentle and people-oriented despite imposing stature
Profile: Great Danes combine record-breaking height with a famously affectionate, almost clingy temperament. They are moderate-energy dogs that need 45–60 minutes of daily walking plus mental stimulation but are notorious couch-leaders indoors. Their lifespan of 7–10 years is the tradeoff for their extraordinary size.
Why it made the list: The Great Dane is the benchmark enormous breed — tallest recognized by the AKC and consistently ranked among the most popular giant breeds in the US. Their stable temperament makes them suitable for families with older children, and their short coat keeps grooming costs minimal ($200–$350/year).
2. Saint Bernard
Size class: Giant — Males 140–180 lb (64–82 kg), 28–30 in (71–76 cm) | Females 120–140 lb (54–64 kg), 26–28 in (66–71 cm)
Key trait: Heaviest average body mass among commonly owned enormous breeds; legendary patience with children
Profile: Originally bred for Alpine rescue work by Swiss monks, Saint Bernards are calm, steady-tempered dogs with moderate exercise needs (30–45 minutes daily). They drool heavily — budget for drool towels and regular face cleaning — and their thick double coat sheds seasonally in dramatic fashion.
Why it made the list: The Saint Bernard's combination of massive bulk, documented gentleness with children, and relatively low exercise demands makes it uniquely suited to families who want an enormous companion without marathon-level activity requirements. Annual grooming runs $400–$700 for professional deshedding sessions.
3. Leonberger
Size class: Giant — Males 110–170 lb (50–77 kg), 28–31.5 in (71–80 cm) | Females 90–140 lb (41–64 kg), 25.5–29.5 in (65–75 cm)
Key trait: Most versatile of the enormous breeds — excels in water rescue, therapy work, and family companionship
Profile: Leonbergers were created in 1840s Germany by crossing Saint Bernards, Newfoundlands, and Great Pyrenees. The result is an athletic, water-loving giant with a lion-like mane and an eagerness to work alongside their people. They need 60–90 minutes of daily activity and thrive when given a job, even if that job is carrying a backpack on hikes.
Why it made the list: For active families who want an enormous breed that can genuinely keep up on trails, swims, and outdoor adventures, the Leonberger is unmatched. Their versatility in dog sports (carting, water rescue, agility at modified heights) gives owners more bonding options than most giants offer.
Tier 2: Best for Experienced Owners and Working Roles
4. English Mastiff
Size class: Super-Giant — Males 160–230 lb (73–104 kg), 30+ in (76+ cm) | Females 120–170 lb (54–77 kg), 27.5+ in (70+ cm)
Key trait: Heaviest dog breed in the world by maximum recorded weight; deeply loyal guardian with low exercise drive
Profile: English Mastiffs are the heavyweight champions of the canine world. Despite their bulk, they are notably low-energy, requiring only 20–30 minutes of gentle daily walking. They bond intensely with their family, are reserved with strangers, and need early socialization to prevent overprotectiveness. Expect significant drooling, snoring, and space consumption on furniture.
Why it made the list: No list of enormous dog breeds is complete without the Mastiff. Their sheer mass (the AKC records individuals exceeding 250 lb / 113 kg) is unrivaled, and their docile home temperament surprises people who expect aggression from such a large animal. Food costs run $1,800–$2,800/year for quality large-breed kibble.
5. Newfoundland
Size class: Giant — Males 130–150 lb (59–68 kg), 28 in (71 cm) | Females 100–120 lb (45–54 kg), 26 in (66 cm)
Key trait: Superior water rescue ability and documented lifesaving instinct; exceptionally gentle with children
Profile: Newfoundlands are working water dogs from Canada's Atlantic coast, bred to haul nets and rescue drowning fishermen. Their webbed feet, water-resistant double coat, and innate swimming ability make them natural lifeguards. They need 45–60 minutes of daily exercise, ideally including swimming access. The AKC breed standard describes them as "sweetness of temperament" personified.
Why it made the list: The Newfoundland's documented history of water rescues and their legendary patience with children (earning the nickname "nanny dog") gives them a unique functional niche among enormous breeds. Families near lakes, pools, or coastlines will find no better giant companion.
6. Tibetan Mastiff
Size class: Giant — Males 90–150 lb (41–68 kg), 26+ in (66+ cm) | Females 70–120 lb (32–54 kg), 24+ in (61+ cm)
Key trait: Most independent and strong-willed of the enormous breeds; ancient Himalayan livestock guardian with intense territorial instincts
Profile: Tibetan Mastiffs are primitive guardian dogs that have protected flocks in the Himalayas for millennia. They are not biddable, obedience-oriented dogs — they think independently and make their own decisions about threats. Nighttime barking is common and can strain neighbor relations. They require experienced owners who understand livestock guardian temperament.
Why it made the list: For owners seeking an enormous breed with genuine guardian capability and a primitive, cat-like independence, the Tibetan Mastiff is in a class of its own. They are not recommended for first-time owners, but in the right hands they are extraordinary. Note: local breed-specific legislation may apply in some jurisdictions — always check your local ordinances.
7. Caucasian Shepherd (Caucasian Ovcharka)
Size class: Super-Giant — Males 110–200+ lb (50–90+ kg), 27–30+ in (69–76+ cm) | Females 100–180 lb (45–82 kg), 25–28 in (64–71 cm)
Key trait: Most formidable livestock guardian breed; extreme territoriality and protective drive suited only to working farm/ranch environments
Profile: Originating from the Caucasus Mountains between Europe and Asia, Caucasian Shepherds have guarded livestock against wolves and bears for centuries. They are intensely loyal to their family and flock but are not appropriate as suburban pets. They need acreage, a working purpose, and an owner experienced with powerful guardian breeds.
Why it made the list: Among enormous dog breeds with genuine working guardian capability, the Caucasian Shepherd is arguably the most powerful. They are included here for rural property owners and working farm situations, with the strong caveat that they are not suitable for casual pet ownership.
Tier 3: Best for Specific Lifestyles and Climates
8. Irish Wolfhound
Size class: Giant — Males 120+ lb (54+ kg), 32+ in (81+ cm) | Females 105+ lb (48+ kg), 30+ in (76+ cm)
Key trait: Tallest sighthound breed; athletic, graceful galloper with a gentle, sensitive temperament
Profile: Irish Wolfhounds were historically used to hunt wolves and elk in Ireland. Despite their sighthound heritage, they are calm indoors and surprisingly good apartment dogs if given adequate outdoor running time. They need access to a secure, fenced area for off-leash galloping 3–4 times per week. Their wiry coat requires hand-stripping or clipping every 6–8 weeks ($50–$80 per session).
Why it made the list: The Irish Wolfhound combines extraordinary height (rivaling the Great Dane) with sighthound athleticism and a gentle, almost shy temperament. For owners who want an enormous breed that can sprint across a field and then curl up quietly on the couch, this breed is ideal. Lifespan is unfortunately short at 6–8 years.
9. Bernese Mountain Dog
Size class: Large-Giant — Males 80–115 lb (36–52 kg), 25–27.5 in (64–70 cm) | Females 70–95 lb (32–43 kg), 23–26 in (58–66 cm)
Key trait: Most trainable of the enormous breeds for carting and draft work; striking tri-color coat and eager-to-please attitude
Profile: Bernese Mountain Dogs were Swiss farm dogs bred for draft work, herding, and general farm utility. They are highly biddable, food-motivated, and excel in obedience and carting competitions. They need 45–60 minutes of daily exercise but are sensitive to heat — avoid vigorous activity above 75°F (24°C). Their lifespan of 7–10 years is limited primarily by cancer predisposition.
Why it made the list: The Bernese Mountain Dog bridges the gap between "enormous" and "trainable" better than almost any other giant breed. For owners who want to participate in dog sports, therapy work, or carting with their enormous companion, the Berner is the top choice. Males at the upper weight range firmly clear the 100 lb threshold.
10. Neapolitan Mastiff
Size class: Giant — Males 150 lb (68 kg), 26–31 in (66–79 cm) | Females 110 lb (50 kg), 24–29 in (61–74 cm)
Key trait: Most visually dramatic enormous breed with extensive facial wrinkles and loose skin; powerful estate guardian with strong territorial instincts
Profile: Neapolitan Mastiffs descend from Roman war dogs and have served as Italian estate guardians for centuries. Their massive, wrinkled appearance is unmistakable. They are low-energy (20–30 minutes of daily walking), extremely loyal to family, and aloof with strangers. Extensive skin folds require daily cleaning to prevent infection, and drool management is a constant reality.
Why it made the list: The Neapolitan Mastiff rounds out this list as the most visually striking enormous breed. They suit experienced owners who want a low-energy guardian with dramatic presence and are prepared for the grooming and cleaning demands of their unique skin structure.
How These Enormous Dog Breeds Compare
The following comparison table summarizes the key attributes across all 10 breeds to help you evaluate them side by side. Weight ranges reflect healthy adult males at ideal body condition score.
| Breed | Male Weight | Daily Exercise | Lifespan | Annual Cost Est. |
|---|---|---|---|---|
| Great Dane | 140–175 lb / 64–79 kg | 45–60 min | 7–10 years | $2,800–$4,200 |
| Saint Bernard | 140–180 lb / 64–82 kg | 30–45 min | 8–10 years | $3,000–$4,500 |
| Leonberger | 110–170 lb / 50–77 kg | 60–90 min | 8–9 years | $2,600–$4,000 |
| English Mastiff | 160–230 lb / 73–104 kg | 20–30 min | 6–10 years | $3,200–$5,000 |
| Newfoundland | 130–150 lb / 59–68 kg | 45–60 min | 9–10 years | $2,800–$4,200 |
| Tibetan Mastiff | 90–150 lb / 41–68 kg | 30–45 min | 10–12 years | $2,400–$3,800 |
| Caucasian Shepherd | 110–200+ lb / 50–90+ kg | 45–60 min | 10–12 years | $2,600–$4,000 |
| Irish Wolfhound | 120+ lb / 54+ kg | 45–60 min + sprinting | 6–8 years | $2,800–$4,500 |
| Bernese Mountain Dog | 80–115 lb / 36–52 kg | 45–60 min | 7–10 years | $2,600–$4,200 |
| Neapolitan Mastiff | 150 lb / 68 kg | 20–30 min | 7–9 years | $3,000–$4,800 |
Annual cost estimates include food, routine veterinary care, grooming, heartworm/flea/tick prevention, and pet insurance. They do not include emergency veterinary expenses, which for giant breeds average $3,000–$8,000 per incident according to ASPCA cost data. Giant breed pet insurance premiums typically run $80–$150/month depending on age and coverage level.
Decision Framework: Which Enormous Breed Fits Your Life?
Choosing between the top enormous dog breeds comes down to matching the dog's needs to your actual daily reality — not the lifestyle you wish you had. Use this decision flowchart to narrow your options:
- Do you have at least 1 hour per day for structured outdoor exercise?
- Yes → Consider Leonberger, Great Dane, or Irish Wolfhound (all need genuine aerobic activity)
- No, I have 20–40 minutes → Consider English Mastiff, Neapolitan Mastiff, or Saint Bernard (lower exercise demands)
- Do you have children under age 10 in the household?
- Yes → Newfoundland and Saint Bernard are the top choices — both have documented exceptional patience with young children and lower prey drive
- No, or children are teenagers → All 10 breeds are viable; proceed to next question
- Is this your first dog, or do you have prior experience with large breeds?
- First dog → Great Dane, Bernese Mountain Dog, or Newfoundland — all are forgiving of beginner training mistakes and highly people-oriented
- Experienced with large breeds → Tibetan Mastiff, Caucasian Shepherd, or Neapolitan Mastiff become viable options
- What is your living situation?
- Suburban home with fenced yard → Great Dane, Saint Bernard, Bernese Mountain Dog
- Rural property with acreage → Caucasian Shepherd, Tibetan Mastiff, Leonberger
- Urban apartment with park access → Irish Wolfhound (surprisingly good apartment dogs if exercised), English Mastiff (low energy, but need ground-floor or elevator access due to joint stress on stairs)
- What is your climate?
- Hot/humid (USDA zones 8–11) → Great Dane or Neapolitan Mastiff — both have short coats and handle heat better than double-coated giants. Always provide AC and avoid midday exercise above 80°F (27°C).
- Cold/snowy (USDA zones 3–6) → Newfoundland, Saint Bernard, Tibetan Mastiff, or Bernese Mountain Dog — their double coats provide excellent cold protection
Honorable Mentions and Breeds to Consider Carefully
Several breeds narrowly missed this list or warrant a caution flag:
Honorable Mentions (did not meet our size threshold but are large-giant crossover breeds worth researching):
- Anatolian Shepherd: 110–150 lb, exceptional guardian, but extremely independent and not suited to pet-only homes
- Great Pyrenees: 85–100+ lb males — some individuals clear 100 lb, many do not; outstanding livestock guardian with gentle family temperament
- Dogue de Bordeaux: 99–110 lb males — just below our threshold; powerful French mastiff-type with significant brachycephalic health concerns
- Boerboel: 150–200 lb, South African mastiff; powerful guardian breed requiring experienced handling and early socialization
Breeds to Approach With Caution (enormous size but significant ownership challenges):
- Cane Corso: While males reach 100–110 lb, they are more athletic-guardian than truly enormous, and their protection drive requires dedicated training from experienced owners
- Presa Canario: 100–130 lb with strong dog-aggression tendencies; not suitable for multi-dog households or inexperienced owners
- Any "designer" giant mix (e.g., Daniff, Saint Berdoodle): Unpredictable adult size, health, and temperament — we recommend choosing a well-documented purebred from a responsible breeder who performs OFA health testing or adopting from a breed-specific rescue
Frequently Asked Questions About Enormous Dog Breeds
How much does it cost to buy an enormous dog breed puppy?
Purchase prices for enormous breed puppies from responsible breeders who perform health testing (OFA hips, elbows, cardiac exams) typically range from $1,500 to $4,000. Tibetan Mastiffs command the highest prices at $2,000–$5,000+. English Mastiffs and Great Danes are generally $1,800–$3,000. Always verify that the breeder provides OFA or PennHIP certification for both parents — hip dysplasia prevalence in giant breeds ranges from 15% to 40% depending on the breed, and responsible breeding practices significantly reduce this risk. Breed-specific rescues offer adult enormous dogs for $200–$600 adoption fees.
Are enormous dog breeds good with children?
Most enormous breeds on this list — particularly the Newfoundland, Saint Bernard, Great Dane, and Bernese Mountain Dog — have excellent reputations with children. However, their sheer size creates accidental injury risk: a 150 lb dog can knock over a toddler simply by walking past them. Always supervise interactions, teach children not to climb on or startle the dog, and provide the dog with a child-free retreat space. The Tibetan Mastiff and Caucasian Shepherd are more reserved and are better suited to households with older, dog-savvy teenagers.
What health problems are most common in enormous dog breeds?
Giant breeds share several health vulnerabilities that directly impact lifetime care costs:
- Hip and elbow dysplasia: Affects 15–40% of giant breed dogs depending on breed and breeding quality; surgical treatment (total hip replacement) costs $5,000–$8,000 per joint
- Gastric dilatation-volvulus (bloat/GDV): Life-threatening stomach twisting most common in deep-chested giants like Great Danes (lifetime risk up to 40%); prophylactic gastropexy during spay/neuter costs $300–$800 and reduces GDV risk by over 95%
- Dilated cardiomyopathy (DCM): Heart muscle disease prevalent in Great Danes, Irish Wolfhounds, and Newfoundlands; cardiac screening via echocardiogram costs $300–$500 annually after age 5
- Osteosarcoma: Bone cancer disproportionately affects giant breeds, particularly Irish Wolfhounds and Great Danes; treatment (amputation + chemotherapy) runs $8,000–$15,000
Consult your veterinarian about a breed-specific preventive health screening schedule. The Merck Veterinary Manual provides detailed breed-specific health information for each of these breeds.
How much food does an enormous dog eat per month?
An adult enormous breed dog at healthy weight typically consumes 6–12 cups of premium large-breed kibble daily, depending on their weight, activity level, and the food's caloric density. Monthly food costs range from $120–$250 for a 120 lb dog to $200–$400 for a 200 lb Mastiff. Feed a formula specifically designed for large/giant breeds — these contain controlled calcium-to-phosphorus ratios and moderate caloric density to support slower, healthier skeletal growth. Avoid free-feeding; measured meals twice daily reduce bloat risk.
Can enormous dog breeds live in apartments?
Some can, with important caveats. Irish Wolfhounds and English Mastiffs are surprisingly adaptable to apartment living because they are low-energy indoors, but you must commit to daily outdoor exercise and have ground-floor or elevator access (stairs stress giant breed joints). Great Danes also adapt reasonably well. Double-coated giants like Newfoundlands and Saint Bernards struggle in small, warm apartments and need more space to manage their shedding and temperature regulation. Always check your building's breed and weight restrictions before committing.
What training methods work best for enormous breeds?
Positive reinforcement and force-free training methods are essential for enormous breeds. Aversive tools like shock collars or prong collars can damage the human-dog bond and create fear-based reactivity in a dog that is physically capable of causing serious harm if frightened or frustrated. Start socialization and basic obedience by 8–12 weeks of age, use food motivation (most giants are highly food-driven), and enroll in puppy classes with a certified positive-reinforcement trainer. Teach loose-leash walking early — a 150 lb adolescent pulling on a leash is a genuine safety hazard. The "nothing in life is free" protocol (asking for a sit before meals, doors, and attention) builds respectful manners without confrontation.
Anouk Beaumont
All our authors care for dogs every day — read more of their work on the authors page.
