Common Health Problems in Great Danes

There's nothing quite like life with a Great Dane.

They're enormous, gentle, goofy, and endlessly devoted, the kind of dog that leaves a permanent mark on your heart.

But that remarkable size comes with a tradeoff. Great Danes are predisposed to several serious health conditions, and their lifespan is shorter than many smaller breeds, typically 7 to 10 years.

The good news is that knowing what your Great Dane is most at risk for helps you spot trouble earlier, ask better questions at the vet, and make choices that support a longer, more comfortable life.

Here are the health problems every Great Dane owner should understand.

1. Bloat (Gastric Dilatation-Volvulus)

If there is one condition every Great Dane owner must know, it's bloat.

Bloat, or gastric dilatation-volvulus (GDV), occurs when the stomach fills with gas and then twists on itself. It is a true emergency that can become fatal within hours.

Great Danes are the highest-risk breed of all. A long-term Purdue University study found that giant, deep-chested breeds are most vulnerable, with the Great Dane's lifetime risk of bloat reported to be as high as roughly 40%.

Warning signs of bloat include:

• A swollen or distended abdomen
• Unproductive retching (trying to vomit with nothing coming up)
• Restlessness or pacing
• Excessive drooling
• Signs of distress or collapse

Bloat requires immediate emergency veterinary care. There is no home remedy. Many owners of at-risk breeds also discuss a preventive surgery called a gastropexy with their veterinarian, which can reduce the risk of the stomach twisting.

Because bloat is so serious for this breed, it's worth understanding in depth. Our full guide covers the warning signs to act on fast, what you can and can't control, gastropexy, and how to build an emergency plan: Bloat in Great Danes: What You Can Control (and What You Can't).

2. Dilated Cardiomyopathy (DCM)

Great Danes are sometimes called a "heartbreak breed," in part because of their predisposition to dilated cardiomyopathy.

DCM is a disease in which the heart muscle weakens and the heart enlarges, reducing its ability to pump blood effectively. In Great Danes it is believed to have a strong genetic basis, and the breed is considered among the most affected, second only to the Doberman Pinscher.

Possible signs include:

• Coughing or labored breathing
• Weakness or fatigue
• Reduced tolerance for exercise
• Fainting or collapse
• A distended belly from fluid buildup

Because DCM can develop silently, many veterinary cardiologists recommend periodic screening for at-risk breeds, often with an echocardiogram and sometimes a Holter monitor. Early detection gives you and your veterinarian more options.

3. Osteosarcoma (Bone Cancer)

Osteosarcoma is the most common bone cancer in dogs, and large and giant breeds carry a dramatically higher risk than small dogs.

A UK VetCompass study found that body size was strongly associated with risk: dogs over roughly 40 kg (about 88 pounds) had far higher odds of osteosarcoma than small dogs. Given that most Great Danes weigh well over 100 pounds, the breed is considered high-risk.

Osteosarcoma often appears in the limbs, so watch for:

• Persistent or worsening lameness
• Swelling on a leg or near a joint
• Pain that doesn't resolve
• Reluctance to bear weight

Any unexplained, persistent lameness in a Great Dane is worth a prompt veterinary evaluation.

4. Hip Dysplasia

Hip dysplasia is a developmental condition in which the hip joint doesn't fit together properly, leading to abnormal wear, inflammation, and often arthritis over time.

It's common enough in large and giant breeds that the Orthopedic Foundation for Animals recommends routine hip screening in breeding dogs. OFA data has classified roughly 13% of evaluated Great Danes as dysplastic, though the true number may be higher since not every dog is screened.

For a full breakdown of signs, diagnosis, and management, see our guide to hip dysplasia in Great Danes.

5. Arthritis (Osteoarthritis)

Arthritis is one of the most common mobility challenges Great Danes face as they age. Years of carrying significant weight, sometimes compounded by conditions like hip or elbow dysplasia, can wear down cartilage and lead to stiffness and discomfort.

Because it develops gradually, arthritis is easy to mistake for "just getting older." Our article on arthritis in Great Danes covers the early signs and management strategies in detail.

6. Wobbler Syndrome

Wobbler syndrome, or cervical spondylomyelopathy, affects the spine in the neck, leading to compression of the spinal cord. Great Danes are one of the most commonly affected breeds, with epidemiological data suggesting it affects roughly 4% of the breed.

Unlike Dobermans, who tend to develop it in middle age, Great Danes are often affected younger, between about one and three years old, usually with a bony form involving the vertebrae.

Signs may include:

• A wobbly, unsteady gait (especially in the rear)
• Weakness or stumbling
• A lowered head carriage or neck stiffness
• Difficulty coordinating movement

Other Conditions to Be Aware Of

Great Danes can also be affected by:

• Hypothyroidism (an underactive thyroid that can affect energy, weight, and coat)
• Elbow dysplasia
• Eye conditions such as entropion
• Growth-related orthopedic issues during puppyhood

This isn't a complete list, but it covers the conditions owners are most likely to encounter.

How to Support Your Great Dane's Long-Term Health

You can't eliminate every risk, but a proactive approach makes a real difference. The fundamentals that support nearly every aspect of a Great Dane's health are:

• Keep them lean. Excess weight adds stress to joints, the heart, and the whole body.
• Preserve muscle. Strong muscles stabilize joints and support mobility as dogs age. Here's why muscle matters more than most owners realize.
• Stay consistent with exercise. Regular, moderate movement beats occasional intense bursts.
• Improve traction at home. Don't underestimate the hidden cost of slippery floors.
• Prioritize dental care. Dental disease is common and affects more than just the mouth.
• Stay current on preventive vet care. Screening catches many problems earlier, when there are more options.

Learning to recognize the early signs your Great Dane may be slowing down can also help you act sooner. For the complete picture, start with our Great Dane joint health guide.

What About Supplements?

Many owners include supplements as part of a broader wellness routine, often to support joint health and healthy aging. Supplements are not intended to diagnose, treat, cure, or prevent any disease, and they work best as one piece of a plan that includes good nutrition, exercise, environmental support, and regular veterinary care.

If joint support is something you're considering, our guide to what to look for in a joint supplement walks through the ingredients to know.

Frequently Asked Questions

What health problems are Great Danes prone to?

Great Danes are predisposed to bloat (GDV), dilated cardiomyopathy, osteosarcoma, hip dysplasia, arthritis, and Wobbler syndrome, among other conditions, largely because of their giant size and genetics.

What is the most serious health risk for a Great Dane?

Bloat is the most urgent because it can become fatal within hours. Heart disease and cancer are also leading concerns for the breed. Knowing the warning signs and acting quickly is critical.

How long do Great Danes live?

Most Great Danes live between 7 and 10 years, though individual lifespans vary. You can read more in our guide on helping your Great Dane live a longer, healthier life.

Can I prevent these health problems?

Not entirely, since genetics play a major role. But weight management, appropriate exercise, preventive veterinary care, and early recognition of symptoms can meaningfully support your dog's health and quality of life.

The Bottom Line

Great Danes ask a lot of their bodies simply by being Great Danes.

Understanding the conditions they're most prone to isn't about worrying, it's about being prepared. The sooner you recognize a problem, the more you and your veterinarian can do about it.

Because when you love a giant breed, every healthy, comfortable year is a gift, and our goal is always more, better years.

References

Glickman et al., Purdue University — Incidence of and Breed-Related Risk Factors for Gastric Dilatation-Volvulus in Dogs
https://pubmed.ncbi.nlm.nih.gov/10638316/

North Carolina State University Veterinary Hospital — Great Dane Dilated Cardiomyopathy
https://hospital.cvm.ncsu.edu/services/small-animals/genetics/great-dane-dilated-cardiomyopathy/

VetCompass — Dog Breeds and Conformations Predisposed to Osteosarcoma in the UK
https://pmc.ncbi.nlm.nih.gov/articles/PMC10294386/

The Ohio State University Veterinary Medical Center — Wobbler Syndrome
https://vmc.vet.osu.edu/resources/wobbler-syndrome

Orthopedic Foundation for Animals (OFA) — Hip Dysplasia
https://ofa.org/diseases/hip-dysplasia/

American Kennel Club — Great Dane
https://www.akc.org/dog-breeds/great-dane/