10 Best Giant Dog Breeds for Families: Sizes, Temperaments & Costs
Explore the top giant dog breeds that excel as family companions.
What Qualifies as a Giant Dog Breed?
Our Selection Criteria
For this guide, we define giant dog breeds as those that typically reach 100+ pounds (45+ kg) at maturity and stand 27+ inches (69+ cm) at the shoulder. Beyond sheer size, every breed on this list was evaluated against these family-fit benchmarks:
- Temperament stability: Low reactivity, high tolerance for unpredictable child behavior, and minimal prey drive toward small household pets.
- Trainability: Willingness to work with positive reinforcement methods; breeds that shut down or become stubborn under pressure were deprioritized.
- Health predictability: Breeds with well-documented health screening protocols (OFA, PennHIP) and responsible breeder networks.
- Space adaptability: While all giant breeds need room, we favored those that can thrive in suburban homes with yards — not just rural estates.
- Cost transparency: Purchase price, food, and veterinary costs that, while high, are predictable and budgetable.
We excluded breeds with extreme brachycephalic features (which compromise breathing and lifespan), breeds with documented aggression toward unfamiliar people, and breeds where responsible acquisition is nearly impossible due to rarity.
Why Choose a Giant Dog?
Giant breeds earn their reputation as "gentle giants" for good reason. Dogs over 100 pounds often display a calm, steady demeanor that smaller, high-energy breeds lack. Their size alone acts as a natural deterrent to intruders, yet most are famously affectionate with children. According to the American Kennel Club, giant breeds like the Great Dane and Newfoundland consistently rank among the most patient and people-oriented dogs in the canine world.
However, giant dog ownership comes with non-negotiable realities: higher food bills ($80–$200/month), larger medication doses (heartworm preventives for a 150-pound dog cost nearly double those for a 50-pound dog), shorter lifespans (most giant breeds live 7–10 years), and the physical strength to manage a dog that can accidentally knock over a toddler simply by wagging its tail.
The 10 Best Giant Dog Breeds for Families
We've organized these breeds into logical groups based on energy level and lifestyle fit, from the most laid-back to the most active.
The Calm & Steady Companions
1. Great Dane
Size Class: Super Giant (140–175 lb / 64–79 kg; 30–34 in / 76–86 cm)
Key Family Trait: Despite holding the record for tallest dog breed, Great Danes are famously low-energy indoors — often called "the world's biggest lap dog." They form intense bonds with children and tolerate the chaos of family life with remarkable patience.
Why They Made the List: Great Danes combine impressive size with a surprisingly moderate exercise need (30–45 minutes of walking daily). Their short coat means minimal grooming. The tradeoff is a heartbreakingly short lifespan of 7–10 years and a high risk of gastric dilatation-volvulus (bloat), a life-threatening emergency that requires immediate veterinary intervention.
2. Newfoundland
Size Class: Giant (100–150 lb / 45–68 kg; 26–28 in / 66–71 cm)
Key Family Trait: The Newfoundland's legendary "nanny dog" reputation is well-earned. Bred to rescue drowning sailors, their instinct to protect and watch over children is deeply hardwired. They are exceptionally gentle, even with toddlers.
Why They Made the List: Newfies are one of the few giant breeds with a documented history of child-focused work. Their thick double coat requires serious grooming (3–4 hours/week), and they drool — a lot. But for families who want a dog that will shadow their children with quiet devotion, the Newfoundland is unmatched.
3. Saint Bernard
Size Class: Super Giant (140–180 lb / 64–82 kg; 26–30 in / 66–76 cm)
Key Family Trait: Saint Bernards are famously placid. Originally bred for Alpine rescue, their temperament is steady, watchful, and deeply loyal. They are less clingy than Newfoundlands but equally protective.
Why They Made the List: Their calm energy level (20–40 minutes of daily exercise) makes them suitable for families without massive yards. However, their sheer bulk requires a home with wide doorways and sturdy furniture. Hip and elbow dysplasia screening is essential — always ask breeders for OFA certificates.
The Active & Athletic Giants
4. Bernese Mountain Dog
Size Class: Giant (70–115 lb / 32–52 kg; 23–27.5 in / 58–70 cm)
Key Family Trait: Berners are the "Goldilocks" giant — large enough to feel substantial, but not so massive that they're unwieldy. They are eager to please, highly trainable with positive reinforcement, and thrive on family activities like hiking and cart-pulling.
Why They Made the List: Their versatility is unmatched among giant breeds. Bernese Mountain Dogs excel in obedience, agility (modified for their size), therapy work, and draft competitions. The major concern is lifespan: the breed averages just 7–10 years, with cancer rates significantly higher than average. Responsible breeders now screen for histiocytic sarcoma markers.
5. Leonberger
Size Class: Super Giant (120–170 lb / 54–77 kg; 25.5–31.5 in / 65–80 cm)
Key Family Trait: Leonbergers were specifically bred in 19th-century Germany to be the ultimate family dog — combining the loyalty of a Saint Bernard, the intelligence of a Newfoundland, and the athleticism of a Great Pyrenees. They are water-loving, child-friendly, and remarkably agile for their size.
Why They Made the List: Leonbergers are one of the healthiest giant breeds when sourced from breeders who test for Leonberger polyneuropathy (LPN1 and LPN2), hip dysplasia, and Addison's disease. Their exercise needs are moderate-high (60+ minutes daily), making them ideal for active families.
6. Irish Wolfhound
Size Class: Super Giant (105–120 lb / 48–54 kg; 30–34 in / 76–86 cm)
Key Family Trait: The tallest of all dog breeds, Irish Wolfhounds carry themselves with a quiet dignity. Despite their sighthound heritage (they were bred to hunt wolves), modern Wolfhounds are gentle, somewhat reserved, and deeply bonded to their families.
Why They Made the List: They are surprisingly good with children, though their size and tail can be hazardous around toddlers. They need a securely fenced yard — their chase instinct is still present — but are generally calm indoors. Lifespan is short (6–8 years), and cardiac screening is critical.
The Protective & Loyal Guardians
7. Great Pyrenees
Size Class: Super Giant (85–160 lb / 39–73 kg; 25–32 in / 64–81 cm)
Key Family Trait: Bred to guard flocks in the Pyrenees Mountains, Great Pyrenees are independent thinkers who bond deeply with their family "flock" — children included. They are nocturnal by nature (expect nighttime patrolling) and have a signature bark that warns off threats long before physical confrontation.
Why They Made the List: Their protective instinct is reliable without being aggressive. They are gentle with known family members and reserved (not hostile) with strangers. Training requires patience — they were bred to make independent decisions, not take orders. Early socialization is non-negotiable.
8. Tibetan Mastiff
Size Class: Super Giant (90–150 lb / 41–68 kg; 24–30 in / 61–76 cm)
Key Family Trait: Tibetan Mastiffs are fiercely loyal to their family and aloof with outsiders. They are not recommended for first-time giant dog owners, but for experienced families, they offer unmatched devotion and a striking, lion-like appearance.
Why They Made the List: They are one of the few giant breeds with a relatively long lifespan (10–12 years) and lower rates of hip dysplasia compared to other giants. However, their independent nature and strong guarding instinct require consistent, force-free training from puppyhood. They shed heavily once or twice a year.
9. Anatolian Shepherd
Size Class: Giant (110–150 lb / 50–68 kg; 27–29 in / 69–74 cm)
Key Family Trait: Anatolian Shepherds are serious livestock guardians that transfer their protective instincts to their human family. They are calm, watchful, and deeply intelligent — but they are not "cuddly" in the way a Newfoundland is. Best suited for families with older children who understand canine boundaries.
Why They Made the List: They are remarkably healthy for a giant breed, with many living 11–13 years. Their short coat is low-maintenance. However, they need a job — without purpose (flock guarding, property patrol, advanced training), they can become destructive or anxious.
The Gentle Working Giants
10. English Mastiff
Size Class: Super Giant (160–230 lb / 73–104 kg; 27.5–30+ in / 70–76+ cm)
Key Family Trait: The English Mastiff is the heaviest dog breed in the world. Despite their intimidating appearance, they are famously docile, patient, and affectionate. They are content to lounge at your feet all day and are exceptionally tolerant of children.
Why They Made the List: For families who want maximum size with minimum energy, the Mastiff delivers. Exercise needs are low (20–30 minutes daily). The downsides are significant: massive drooling, snoring, short lifespan (6–10 years), and the need for custom-sized everything — beds, crates, car ramps. Veterinary costs are proportionally higher due to weight-based medication dosing.
Breed Comparison: Side-by-Side Data
| Breed | Weight Range (lb/kg) | Lifespan | Daily Exercise | Grooming | Family Fit Score |
|---|---|---|---|---|---|
| Great Dane | 140–175 / 64–79 | 7–10 years | 30–45 min | Low (short coat) | ★★★★★ |
| Newfoundland | 100–150 / 45–68 | 9–10 years | 30–60 min | High (3–4 hrs/wk) | ★★★★★ |
| Saint Bernard | 140–180 / 64–82 | 8–10 years | 20–40 min | Moderate | ★★★★☆ |
| Bernese Mountain Dog | 70–115 / 32–52 | 7–10 years | 45–60 min | High (3+ hrs/wk) | ★★★★★ |
| Leonberger | 120–170 / 54–77 | 8–10 years | 60+ min | High | ★★★★☆ |
| Irish Wolfhound | 105–120 / 48–54 | 6–8 years | 40–60 min | Low-Moderate | ★★★★☆ |
| Great Pyrenees | 85–160 / 39–73 | 10–12 years | 30–45 min | High (seasonal shed) | ★★★★☆ |
| Tibetan Mastiff | 90–150 / 41–68 | 10–12 years | 45–60 min | High (seasonal shed) | ★★★☆☆ |
| Anatolian Shepherd | 110–150 / 50–68 | 11–13 years | 45–60 min | Low | ★★★☆☆ |
| English Mastiff | 160–230 / 73–104 | 6–10 years | 20–30 min | Low (but drool mgmt) | ★★★★☆ |
How to Choose the Right Giant Dog for Your Family
Decision Framework: Match Your Lifestyle to the Right Breed
- Step 1 — Assess your space: Do you have a fenced yard of at least 1/4 acre? If no, eliminate the Irish Wolfhound, Great Pyrenees, and Anatolian Shepherd (they need space to patrol). If yes, proceed to Step 2.
- Step 2 — Evaluate your activity level: Do you want a dog that will hike, swim, or run with you for 60+ minutes daily? If yes, choose the Leonberger or Bernese Mountain Dog. If you prefer a calm companion for short walks and couch time, proceed to Step 3.
- Step 3 — Consider grooming tolerance: Are you willing to commit 3–4 hours per week to brushing, de-shedding, and coat maintenance? If no, eliminate the Newfoundland, Bernese Mountain Dog, and Leonberger. Choose the Great Dane or English Mastiff for minimal coat care.
- Step 4 — Factor in children's ages: If you have children under 5, prioritize the Newfoundland or Great Dane — their patience and tolerance are exceptional. For families with older children (8+), the Great Pyrenees and Saint Bernard are excellent choices.
- Step 5 — Budget reality check: Can you budget $5,000–$8,000 annually for food, preventive medications, and routine veterinary care? Giant breeds eat 6–12 cups of high-quality kibble daily, and weight-based medications (heartworm, flea/tick, joint supplements) cost significantly more. If your budget is tighter, consider the Anatolian Shepherd (longer lifespan = fewer end-of-life costs concentrated in fewer years) or adopt a senior giant breed from a rescue.
Giant Breeds to Approach With Caution
Not every large breed is suited for family life. Here are breeds commonly confused with family-friendly giants that require experienced handlers:
- Cane Corso: Powerful, intelligent, and loyal — but their guarding instinct and high drive make them unsuitable for homes with small children or first-time owners. They require professional training and extensive socialization.
- Dogue de Bordeaux: Affectionate with family but notoriously stubborn and prone to same-sex aggression. Their brachycephalic features also create breathing and heat-tolerance concerns.
- Neapolitan Mastiff: Devoted to their family but deeply suspicious of strangers. Their massive jowls produce extraordinary drool, and their lifespan is just 7–9 years.
- Boerboel: A South African mastiff bred to protect homesteads from lions. Extremely loyal but requires a confident, experienced handler and is not recommended for families with young children or frequent visitors.
Ownership Costs: What Giant Dog Parents Actually Spend
Giant dog ownership is a financial commitment that catches many first-time owners off guard. Here's a realistic annual budget breakdown based on 2025–2026 pricing data:
| Expense Category | Annual Cost Range | Notes |
|---|---|---|
| Food (premium kibble or raw) | $1,200–$2,400 | 6–12 cups/day; AAFCO complete-and-balanced for large breed |
| Preventive medications | $400–$700 | Heartworm, flea/tick — weight-based dosing for 100+ lb dogs |
| Routine veterinary care | $600–$1,200 | Annual exams, bloodwork, hip/elbow X-rays |
| Emergency/specialty care fund | $1,000–$3,000 | Set aside annually; bloat surgery alone costs $3,000–$7,000 |
| Grooming (if applicable) | $600–$1,500 | Professional grooming for double-coated breeds |
| Supplies (beds, crates, ramps) | $400–$800 | Custom/XXL sizes required; replace beds annually |
| Total Annual Cost | $4,200–$9,600 | Does not include initial purchase price ($1,500–$4,000) |
According to the American Veterinary Medical Association, giant breed owners should budget 2–3x the cost of a medium-breed dog for routine care, and significantly more for emergencies due to weight-based medication dosing and surgical complexity.
Health Concerns Every Giant Dog Owner Must Know
Giant breeds face a unique set of health challenges driven by their rapid growth and massive skeletal load. The most critical conditions to discuss with your veterinarian include:
- Gastric Dilatation-Volvulus (GDV/Bloat): A life-threatening emergency where the stomach fills with gas and twists. Most common in deep-chested breeds (Great Danes, Saint Bernards, Irish Wolfhounds). Preventive gastropexy surgery is recommended for high-risk breeds — discuss with your vet.
- Hip and Elbow Dysplasia: Malformation of the joints leading to arthritis. Screening via OFA or PennHIP is essential before breeding. Symptoms include reluctance to rise, "bunny-hopping" gait, and stiffness after exercise.
- Dilated Cardiomyopathy (DCM): Heart muscle weakness common in Great Danes, Irish Wolfhounds, and Newfoundland. Annual cardiac screening is recommended after age 3.
- Osteosarcoma: Aggressive bone cancer with higher prevalence in giant breeds, particularly Rottweilers, Irish Wolfhounds, and Great Danes. Early detection through lameness evaluation is critical.
- Wobbler Syndrome (Cervical Spondylomyelopathy): Spinal cord compression in the neck, most common in Great Danes and Dobermans. Symptoms include unsteady gait and neck pain.
- Unproductive retching or vomiting (possible bloat)
- Sudden collapse or inability to stand
- Distended, hard abdomen
- Difficulty breathing or blue-tinged gums
- Seizures or loss of consciousness
Frequently Asked Questions
Are giant dog breeds good with children?
Yes — most giant breeds are exceptionally patient and gentle with children. The Newfoundland, Great Dane, and Bernese Mountain Dog are particularly renowned for their "nanny dog" instincts. However, their size alone can be hazardous: a 150-pound dog can accidentally knock over a toddler simply by turning around. Always supervise interactions and teach children to respect the dog's space, especially during eating and sleeping.
Do giant dogs need a huge yard?
Not necessarily. While breeds like the Great Pyrenees and Irish Wolfhound benefit from large fenced areas, many giant breeds (Great Danes, English Mastiffs, Saint Bernards) are surprisingly low-energy indoors and can adapt to suburban homes with moderate-sized yards. The key is meeting their daily exercise requirements — a 30-minute walk plus mental stimulation can satisfy many giants.
How much does a giant dog puppy cost?
Expect to pay $1,500–$4,000 for a giant breed puppy from a responsible breeder who performs OFA/PennHIP health testing, provides early socialization, and offers a take-back clause. Breeds like the Tibetan Mastiff and Leonberger can exceed $5,000. Adoption from giant breed rescues typically costs $300–$800 and often includes spay/neuter, vaccinations, and initial veterinary screening.
What is the longest-living giant dog breed?
The Anatolian Shepherd and Great Pyrenees consistently live 11–13 years — significantly longer than most giant breeds. The Tibetan Mastiff also averages 10–12 years. In contrast, the Irish Wolfhound and English Mastiff average just 6–8 years. Longevity in giant breeds is strongly correlated with responsible breeding practices, weight management, and preventive health screening.
Can giant dogs live in apartments?
Technically, some low-energy giants (English Mastiff, Great Dane) can adapt to apartment living if their exercise needs are met with multiple daily walks and mental stimulation. However, most landlords impose weight restrictions (often 50–75 lb maximum), and the logistics of managing a 150+ pound dog in an elevator or narrow stairwell are significant. A house with a fenced yard is strongly recommended for all giant breeds.
What should I feed a giant breed puppy?
Giant breed puppies must be fed a diet specifically formulated for large/giant breed growth. Look for the AAFCO statement indicating the food meets nutrient profiles for "large breed growth" — these formulas restrict calcium and caloric density to prevent rapid bone growth, which contributes to hip dysplasia and other orthopedic diseases. Continue giant breed puppy food until 18–24 months of age, then transition to an adult large-breed formula. Always consult your veterinarian for breed-specific feeding recommendations.
Aaron Whyte
All our authors care for dogs every day — read more of their work on the authors page.
