Saint Bernard Great Dane Mix: Size, Temperament & Care Guide

If you've ever watched a Saint Bernard and a Great Dane share a room and wondered what a cross between these two gentle giants would look like, you're not alone. The Saint Bernard Great Dane mix — sometimes called the Saint Dane or Great Saint — is one of the most physically imposing designer crosses in existence. Weighing in at up to 200 pounds and standing well over 30 inches at the shoulder, this is a dog that demands space, resources, and an owner who understands giant-breed care.

But size isn't the only thing prospective owners need to think about. Mixed-breed dogs inherit traits from both parents in unpredictable combinations, and with two parent breeds that differ in energy level, coat type, and health predispositions, the Saint Bernard Great Dane mix can vary significantly from one individual to the next. This guide breaks down exactly what you can expect — and what you can't — so you can make an informed decision.

Parent Breed Breakdown: Saint Bernard and Great Dane

Understanding any mixed breed starts with understanding its parent breeds. Both the Saint Bernard and the Great Dane are classified as giant breeds by the American Kennel Club, but they come from very different working backgrounds and carry distinct physical and behavioral traits.

Parent Breed Comparison

Trait	Saint Bernard	Great Dane
Origin	Swiss Alps — monastery rescue dog	Germany — boar hunting, estate guardian
AKC Weight Range	120–180 lb (54–82 kg)	110–175 lb (50–79 kg)
AKC Height Range	26–30 in (66–76 cm)	28–32 in (71–81 cm)
Coat Type	Short smooth or long rough; dense undercoat	Short, smooth, single coat
Energy Level	Low to moderate — calm indoors	Moderate — playful bursts, calm indoors
Temperament	Gentle, patient, watchful, sometimes stubborn	Friendly, people-oriented, sensitive, goofy
Typical Lifespan	8–10 years	7–10 years
Shedding	Moderate to heavy (seasonal blow-out)	Moderate year-round
Drooling	Heavy	Moderate to heavy

Both breeds share a reputation for being gentle with families, but the Saint Bernard tends toward independent watchfulness while the Great Dane is more overtly social and handler-focused. These differences matter when they combine in a mixed-breed litter.

Generation Types: F1, F1B, and Multigen Explained

Most Saint Bernard Great Dane mixes you'll encounter are F1 crosses — the result of breeding one purebred Saint Bernard to one purebred Great Dane. This is partly because the breed hasn't developed the multigenerational breeding programs you see with popular doodle crosses. If a breeder advertises F1B or multigen Saint Danes, ask for documentation of parentage and health testing for every dog in the pedigree.

Size Range: How Big Will a Saint Bernard Great Dane Mix Get?

This is a giant-breed cross by any measure. Both parent breeds routinely exceed 120 pounds, and the Great Dane's height combined with the Saint Bernard's bone mass produces offspring that can be truly enormous. However, mixed-breed size is not a simple average — individual puppies may lean heavily toward one parent or land somewhere in between.

Saint Bernard Great Dane Mix — Expected Size Range

Measurement	Low End	High End
Weight (Male)	130 lb (59 kg)	200 lb (91 kg)
Weight (Female)	110 lb (50 kg)	165 lb (75 kg)
Height at Shoulder (Male)	27 in (69 cm)	33 in (84 cm)
Height at Shoulder (Female)	25 in (64 cm)	30 in (76 cm)

Growth in giant breeds is prolonged. Expect your Saint Dane to continue growing in height until approximately 18–24 months and to fill out in muscle and chest width until 2.5 to 3 years of age. Rapid growth phases between 3 and 7 months are a critical window for joint health — overfeeding during this period increases the risk of developmental orthopedic diseases. The Merck Veterinary Manual recommends feeding giant-breed puppies a diet formulated to keep growth rates controlled, with calcium levels between 1.0% and 1.5% on a dry-matter basis.

Temperament: What to Expect (and What Might Surprise You)

Temperament in mixed breeds exists on a spectrum. You won't know exactly where an individual puppy falls until they mature, but understanding the range helps you prepare.

Best-Case Scenario

The dog inherits the Great Dane's people-oriented friendliness and the Saint Bernard's patient calm. The result is a gentle, socially confident giant that's good with children, tolerant of household activity, and easy to live with indoors despite its size. These dogs tend to be watchful without being reactive — they'll notice a visitor but won't bark excessively.

Challenging Scenario

The dog inherits the Saint Bernard's stubborn independence combined with the Great Dane's sensitivity, producing a dog that is both resistant to training and easily stressed by corrections. Some individuals may develop resource guarding tendencies (a trait seen in both parent breeds without proper early management) or become wary of strangers if socialization is inadequate during the 8-to-16-week critical window. A poorly socialized 160-pound dog is a management challenge that requires professional positive-reinforcement training support.

Key Temperament Variables

• Sociability: Great Danes tend to be more gregarious; Saint Bernards more reserved. Your mix could land anywhere on this spectrum.
• Trainability: Great Danes are generally more handler-focused and responsive. Saint Bernards are intelligent but less motivated to obey for its own sake. Force-free, reward-based methods are essential — aversive tools like shock collars or prong collars damage trust and can trigger fear-based aggression in sensitive giant breeds.
• Energy and play style: Expect moderate energy with occasional bursts of exuberance. Both breeds are known as "couch dogs" as adults, but puppies and adolescents can be clumsy and boisterous.
• Vocalization: Neither breed is excessively barky, but deep-chested giants can produce a startlingly loud bark when they choose to use it.

Coat Type, Shedding, and Grooming Needs

Coat inheritance is one of the more visible variables in this cross. The Great Dane contributes genes for a short, smooth, single-layer coat. The Saint Bernard can contribute either a short smooth coat or a longer rough coat with a dense undercoat — depending on which variety was used in the cross.

Is this mix hypoallergenic or low-shedding? No. Neither parent breed carries the low-shedding coat genes found in breeds like Poodles. Regardless of which coat type your Saint Dane inherits, expect regular shedding and seasonal increases. This cross is not suitable for allergy-sensitive households.

Grooming also extends beyond brushing. Both parent breeds are prone to ear infections due to floppy ears that trap moisture — check and clean ears weekly with a veterinarian-approved ear cleanser. Nail trims are critical for giant breeds; overgrown nails alter weight distribution on already-stressed joints. Plan for nail trims every 2–3 weeks, or invest in a scratch board for gradual wear. Dental care matters too — giant breeds are prone to periodontal disease, so daily tooth brushing or veterinary dental cleanings under anesthesia (typically $300–$800 per session) should be part of your care plan.

Health Considerations: Hybrid Vigor vs. Reality

There's a persistent myth that mixed-breed dogs automatically enjoy "hybrid vigor" — the idea that crossing two breeds eliminates inherited health problems. This is misleading. Hybrid vigor, or heterosis, can reduce the incidence of recessive conditions that require two copies of a defective gene (such as certain metabolic disorders). It does not protect against conditions that both parent breeds share as polygenic or structurally linked risks.

The Saint Bernard and the Great Dane share several health predispositions that a cross between them may inherit:

Shared and Parent-Specific Health Risks

Condition	Risk Source	Prevalence Notes	Screening Recommendation
Gastric Dilatation-Volvulus (GDV / Bloat)	Both breeds — deep-chested giants	Great Danes have among the highest breed-specific GDV rates; Saint Bernards also elevated	Discuss prophylactic gastropexy with your vet at spay/neuter time
Hip Dysplasia	Both breeds	OFA data shows ~20–25% of Saint Bernards and ~12% of Great Danes with dysplastic hips	OFA or PennHIP evaluation of both parents before breeding
Elbow Dysplasia	Both breeds (higher in Saint Bernard)	Approximately 12–18% of Saint Bernards affected	OFA elbow radiographs of parents
Dilated Cardiomyopathy (DCM)	Both breeds	Great Danes are a recognized at-risk breed; Saint Bernards also reported	Annual cardiac exam; echocardiogram if murmur detected
Osteosarcoma (Bone Cancer)	Both breeds	Giant breeds carry significantly elevated risk compared to smaller dogs	No screening test; monitor for lameness or swelling
Wobbler Syndrome (Cervical Spondylomyelopathy)	Great Dane (primary)	Great Danes are the most commonly affected breed	Neurological exam if gait abnormalities appear
Entropion / Ectropion (Eyelid Conditions)	Saint Bernard (primary)	Common in the breed due to facial structure	Ophthalmologist evaluation (OFA/CERF)

The combined lifespan for this cross is typically 7 to 10 years, consistent with both parent breeds. Some individuals may reach 11 or 12 years, but planning for a shorter lifespan is realistic and responsible.

Preventive steps you can take:

• Feed a giant-breed-specific puppy formula to control growth rate during the first 18 months.
• Use raised food bowls cautiously — some studies suggest raised bowls may actually increase bloat risk. The AVMA recommends discussing feeding practices with your veterinarian for giant breeds.
• Avoid vigorous exercise for 1 hour before and after meals to reduce GDV risk.
• Maintain a lean body condition score (BCS 4–5 out of 9) to reduce joint stress.
• Ask your veterinarian about prophylactic gastropexy — a surgical procedure that tacks the stomach to the abdominal wall to prevent torsion, often performed at the same time as spay or neuter.

Always consult your veterinarian about a breed-appropriate health screening and vaccination schedule. Giant breeds may have different anesthetic risk profiles, and your vet will tailor protocols accordingly.

Cost, Availability, and Finding Your Dog

The Saint Bernard Great Dane mix is not as commercially common as doodle crosses, which affects both pricing and availability.

Buying from a Breeder

Expect to pay $800 to $2,500 for an F1 Saint Dane puppy from a breeder who health-tests both parent dogs. Prices vary by region, breeder reputation, and whether parents hold AKC registration and OFA health clearances. Some breeders specializing in giant-breed crosses may charge toward the higher end, particularly if they include early puppy socialization programs (such as Puppy Culture or Avidog) and early neurological stimulation.

Red flags that suggest a backyard breeder or puppy mill:

• No health testing documentation for parent dogs (OFA, PennHIP, cardiac, or ophthalmologist clearances)
• Multiple litters always available with no waiting list
• Unwillingness to let you visit the breeding facility and meet the dam
• No take-back clause in the contract (responsible breeders require dogs be returned to them if you can no longer keep the dog)

Adoption and Rescue

Giant-breed rescue organizations occasionally have Saint Dane mixes, particularly as adolescent or adult dogs surrendered when owners underestimated the size and cost of care. Check with organizations like Great Dane Rescue Incorporated, the Saint Bernard Rescue Foundation, or local giant-breed-specific rescue networks. Adoption fees typically range from $200 to $500 and usually include spay/neuter, vaccinations, and a veterinary exam.

First-Year Cost Estimate

Expense Category	Estimated Cost
Puppy purchase or adoption fee	$200–$2,500
Food (giant-breed formula, ~60–80 lb/month as adult)	$1,200–$2,400/year
Veterinary care (vaccines, wellness exams, heartworm prevention)	$600–$1,200
Spay/neuter (giant-breed anesthesia surcharge)	$400–$900
Prophylactic gastropexy (if elected)	$300–$800 additional
Supplies (XL crate, heavy-duty bed, raised bowls, leashes)	$400–$800
Pet insurance (annual premium)	$600–$1,200
Training (group classes or private sessions)	$200–$600

Realistic first-year total: $3,700 to $10,400, depending on whether you adopt or buy, your region's veterinary costs, and whether you elect prophylactic surgery.

Who This Mix Suits Best

The Saint Bernard Great Dane mix is not a beginner dog — not because it's aggressive or difficult, but because its size amplifies every management challenge. A 40-pound dog that pulls on leash is annoying; a 170-pound dog that pulls on leash is dangerous.

Ideal Owner Profile

• Experience: Prior experience with large or giant breeds. You should already be comfortable with leash handling, basic training, and reading canine body language.
• Living space: A home with ground-floor access (stairs are hard on giant-breed joints) and enough indoor space for a dog that will take up a 4×4-foot area when lying down. A fenced yard is strongly recommended — not for running, but for safe, low-impact outdoor time.
• Family composition: Generally good with children when socialized early, but toddlers and a clumsy 100-pound adolescent dog are a fall-risk combination. Best suited to families with children over age 6 or adults-only households.
• Budget: You need to be financially prepared for giant-breed costs — food alone will run $100–$200 per month, and emergency veterinary care for bloat or orthopedic issues can exceed $5,000 in a single visit.
• Time commitment: 30–60 minutes of daily low-impact exercise (leash walks, gentle play) plus ongoing training reinforcement. Giant breeds mature slowly — expect puppy-like behavior and training needs through age 2 to 3.
• Lifespan awareness: You are signing up for a dog that will likely live 7–10 years. End-of-life care for a 150+ pound dog is physically and emotionally demanding — you'll need a plan for mobility support, veterinary house calls, or hospice care.

Who Should Consider a Different Breed

• First-time dog owners without mentorship from an experienced handler or trainer
• Apartment dwellers in buildings without ground-floor or elevator access
• Households with very young children where an accidental knock-down could cause injury
• Owners on a tight budget who cannot absorb a $5,000+ emergency vet bill
• Anyone seeking a highly active running or agility partner — this cross is built for gentle movement, not endurance athletics

Frequently Asked Questions

What two breeds make up the Saint Bernard Great Dane mix?

The Saint Bernard Great Dane mix is a cross between a purebred Saint Bernard and a purebred Great Dane. It is sometimes referred to as a Saint Dane or Great Saint. Most individuals are F1 (first-generation) crosses, meaning each parent is a purebred representative of its respective breed.

How big will a Saint Bernard Great Dane mix get?

Males typically range from 130 to 200 lb (59–91 kg) and 27 to 33 inches (69–84 cm) at the shoulder. Females are somewhat smaller, typically 110 to 165 lb (50–75 kg) and 25 to 30 inches (64–76 cm). Individual size depends on which parent's genes are more strongly expressed, nutrition during growth, and sex. Full physical maturity is not reached until 2.5 to 3 years of age.

What is the temperament of a Saint Bernard Great Dane mix?

Temperament varies by individual. Most Saint Danes are gentle, calm indoors, and affectionate with their families — inheriting the best traits of both parent breeds. Some individuals lean toward the Saint Bernard's watchful independence, while others are more socially outgoing like the Great Dane. Early socialization (8–16 weeks) and consistent positive-reinforcement training are essential regardless of temperament tendency.

Is the Saint Bernard Great Dane mix hypoallergenic?

No. Neither the Saint Bernard nor the Great Dane carries low-shedding or hypoallergenic coat genes. All Saint Dane mixes will shed — some moderately year-round, others heavily with seasonal blow-outs. This cross is not suitable for people with dog allergies.

What health issues might this mix inherit?

The most significant shared risks are gastric dilatation-volvulus (bloat), hip dysplasia, elbow dysplasia, dilated cardiomyopathy, and osteosarcoma. Great Dane lineage also introduces risk for Wobbler Syndrome, while Saint Bernard lineage adds risk for eyelid abnormalities like entropion. Responsible breeders screen parent dogs through OFA or equivalent health-testing organizations. Consult your veterinarian for a personalized screening and prevention plan.

How much does a Saint Bernard Great Dane mix cost?

From a breeder, expect to pay $800 to $2,500 for a puppy, depending on health testing, breeder reputation, and region. Adoption through a giant-breed rescue typically costs $200 to $500. First-year total ownership costs — including food, veterinary care, supplies, and insurance — range from approximately $3,700 to $10,400.

How much exercise does this mix need?

Adults need 30 to 60 minutes of low-impact daily exercise — typically two leash walks of 15–30 minutes each. Avoid high-impact activities like jogging on hard surfaces, especially during the first 2 years when growth plates are still closing. Mental stimulation through sniff walks, food puzzles, and short training sessions helps prevent boredom without stressing joints.

Are Saint Bernard Great Dane mixes good with children?

Generally yes, when properly socialized and supervised. Both parent breeds have reputations for gentleness with family members. However, the sheer size of this cross means that accidental knock-downs are a real risk, particularly with toddlers. Always supervise interactions between any dog and young children, and teach children to respect the dog's resting space.