Great Dane Health Problems: Symptoms and When to Worry
The most common Great Dane health problems are bloat, dilated cardiomyopathy, and hip dysplasia. Great Danes typically live 7–10 years. This page is organized by symptom, so you can jump straight to joint, digestive, heart, and cancer problems, see what each one looks like in a Great Dane, and know whether it is a vet visit this week, a vet visit today, or an emergency right now.
Quick answer: when to worry about your Great Dane
Go to an emergency vet now if you see any of these:
- Joint, back, and mobility: Sudden inability to use the back legs, dragging the hindquarters, or crying out when touched along the spine is an emergency. A ruptured disc has a window of hours for the best outcome.
- Stomach and digestive: Retching that produces nothing, a swollen tight belly, and restlessness are the signs of bloat, a true emergency. Blood in vomit, black tarry stools, or a pet that has stopped eating and passing droppings altogether also needs a vet now.
- Heart: Collapse, fainting, blue gums, labored breathing, or sudden hind-leg paralysis with cold legs (a clot) is an emergency.
- Cancer and tumor: Sudden weakness, pale gums, or a distended belly can mean internal bleeding from a tumor. Go now.
- Any pet: collapse, seizures lasting more than five minutes, uncontrolled bleeding, or an inability to stand.
Book a vet visit this week if you see any of these:
- Joint, back, and mobility: Limping for more than a day or two, stiffness after rest, reluctance to jump or climb stairs, or a change in gait.
- Stomach and digestive: Vomiting or diarrhea lasting more than 24 hours, refusing food for more than a day, or unexplained weight loss.
- Heart: A murmur your vet has heard, coughing at night, tiring on walks, or a resting breathing rate over 30 breaths per minute while asleep.
- Cancer and tumor: Any new lump, a lump that changes size or texture, unexplained weight loss, or a wound that will not heal.
Keep watching if: the change is mild, your Great Dane is still eating, drinking, and moving normally, and it resolves within a day or two. Write down what you saw and when; a dated list is the most useful thing you can bring to a vet.
Joint, back, and mobility problems in Great Danes
Hip Dysplasia
Abnormal hip joint development. The strain of carrying so much weight worsens outcomes.
How common in Great Danes: Affects approximately 12% of Great Danes
What it looks like in a Great Dane:
- Hind leg lameness
- Difficulty rising
- Bunny-hopping gait
- Reluctance to exercise
Wobbler Syndrome
Spinal cord compression in the neck causing wobbly gait. Common in Great Danes.
What it looks like in a Great Dane:
- Wobbly gait
- Neck pain
- Weakness in all four legs
- Difficulty walking
When to see a vet: Limping for more than a day or two, stiffness after rest, reluctance to jump or climb stairs, or a change in gait.
When it is an emergency: Sudden inability to use the back legs, dragging the hindquarters, or crying out when touched along the spine is an emergency. A ruptured disc has a window of hours for the best outcome.
Stomach and digestive problems in Great Danes
Bloat (Gastric Dilatation-Volvulus / GDV)
Life-threatening emergency where the stomach fills with gas and can twist. Great Danes have the highest risk of any breed.
How common in Great Danes: Lifetime risk of approximately 40% for Great Danes
What it looks like in a Great Dane:
- Distended abdomen
- Unproductive retching
- Restlessness
- Drooling
- Rapid breathing
- Collapse
Outlook: this is one of the conditions that can shorten a Great Dane's life. Managed early it is often years, not months, but it belongs on the list of things that eventually lead to end-of-life decisions.
When to see a vet: Vomiting or diarrhea lasting more than 24 hours, refusing food for more than a day, or unexplained weight loss.
When it is an emergency: Retching that produces nothing, a swollen tight belly, and restlessness are the signs of bloat, a true emergency. Blood in vomit, black tarry stools, or a pet that has stopped eating and passing droppings altogether also needs a vet now.
Deeper guide: Great Dane Gastric Dilatation-Volvulus (Bloat/GDV): signs, progression, and when to act
Heart problems in Great Danes
Dilated Cardiomyopathy (DCM)
Heart muscle disease causing the heart to enlarge and pump inefficiently. Very common in Danes.
How common in Great Danes: One of the most affected breeds
What it looks like in a Great Dane:
- Weakness
- Coughing
- Difficulty breathing
- Fainting
- Sudden death
Outlook: this is one of the conditions that can shorten a Great Dane's life. Managed early it is often years, not months, but it belongs on the list of things that eventually lead to end-of-life decisions.
When to see a vet: A murmur your vet has heard, coughing at night, tiring on walks, or a resting breathing rate over 30 breaths per minute while asleep.
When it is an emergency: Collapse, fainting, blue gums, labored breathing, or sudden hind-leg paralysis with cold legs (a clot) is an emergency.
Cancer in Great Danes
Osteosarcoma (Bone Cancer)
Aggressive bone cancer common in large and giant breeds.
How common in Great Danes: Giant breeds are highly predisposed
What it looks like in a Great Dane:
- Lameness
- Swelling near joints
- Pain
- Sudden fracture
Outlook: this is one of the conditions that can shorten a Great Dane's life. Managed early it is often years, not months, but it belongs on the list of things that eventually lead to end-of-life decisions.
When to see a vet: Any new lump, a lump that changes size or texture, unexplained weight loss, or a wound that will not heal.
When it is an emergency: Sudden weakness, pale gums, or a distended belly can mean internal bleeding from a tumor. Go now.
Warning signs to watch for in a Great Dane
These are the early signals owners most often miss, or dismiss as age:
- ANY sign of bloat - emergency, don't wait
- Weakness or fainting (heart issues)
- Lameness, especially if sudden (bone cancer)
- Wobbly gait or neck pain
- Coughing or breathing difficulty
Great Dane lifespan: what is normal
Great Danes typically live only 7-10 years - one of the shortest lifespans of any breed. If your Dane reached 10, that's exceptional. Many are lost to heart disease or bloat before 8. Their size creates an unavoidable health burden.
Genetic factors
Great Danes' massive size puts enormous strain on their hearts, joints, and other organs. They have one of the highest rates of bloat and heart disease of any breed. This is the price of their size.
What Great Danes usually die from
Knowing what typically ends a Great Dane's life is not morbid. It tells you which of the symptoms above deserve the fastest response.
- Bloat (GDV) (about 30%): The number one killer of Great Danes. Often sudden and fatal even with emergency treatment.
- Heart disease (DCM) (about 25%): Heart failure or sudden cardiac death.
- Cancer (about 20%): Including osteosarcoma and other cancers common in giant breeds.
- Age-related decline (about 15%): Organ failure - though 'old age' comes young for Danes.
- Orthopedic issues (about 5%): Severe joint disease affecting quality of life.
When it may be time: from managing symptoms to saying goodbye
Some of the conditions above (bloat, dilated cardiomyopathy, and osteosarcoma) are managed for years. Each one, though, has a point where treatment prolongs the decline rather than the life. If you are reading this page because your Great Dane is older and the bad days are starting to outnumber the good, that is worth saying plainly: you may not be looking for a diagnosis anymore. You may be looking for permission.
Signs the balance has shifted in a Great Dane:
- Significant mobility problems
- Breathing difficulty or coughing
- Unable to rise without assistance
- Loss of interest in food or family
The when to say goodbye to your Great Dane guide walks through the quality-of-life scale vets use, what euthanasia actually involves, and how to prepare. If you are weighing costs and options, the pet end-of-life services guides by city cover in-home euthanasia and cremation prices, and the coping with losing a Great Dane guide is there for afterward.
Preventive care for Great Danes
- Discuss prophylactic gastropexy with your vet (bloat prevention surgery)
- Feed multiple small meals from floor-level bowls
- Avoid exercise immediately before and after eating
- Annual cardiac screening (echocardiogram)
- Maintain lean body weight to reduce joint and heart strain
- Know the signs of bloat - seconds matter
Sources
This page is compiled from veterinary references and breed-specific health studies. It is general information, not a diagnosis; your vet knows your Great Dane.
- https://www.gdca.org/health/
- https://www.ofa.org/diseases/breed-statistics
- https://www.vet.purdue.edu/bloat/
If this has stopped being about symptoms
Many people land here when their Great Dane is old or ill and they are trying to work out whether what they are seeing is the end. If that is you, the health details above matter less than the question underneath them.
Great Dane Health FAQs
- What are the most common health problems in Great Danes?
- The conditions most often seen in Great Danes are bloat, dilated cardiomyopathy, hip dysplasia, and osteosarcoma. Life-threatening emergency where the stomach fills with gas and can twist. Great Danes have the highest risk of any breed.
- What do Great Danes usually die from?
- The leading causes of death in Great Danes are bloat, heart disease, and cancer. The number one killer of Great Danes. Often sudden and fatal even with emergency treatment. Great Danes typically live 7–10 years.
- Do Great Danes have joint problems?
- Yes. The joint conditions seen in Great Danes are hip dysplasia and wobbler syndrome. Limping for more than a day or two, stiffness after rest, reluctance to jump or climb stairs, or a change in gait. Sudden inability to use the back legs, dragging the hindquarters, or crying out when touched along the spine is an emergency. A ruptured disc has a window of hours for the best outcome.
- Do Great Danes have digestive problems?
- Yes. The digestive conditions seen in Great Danes are bloat. Vomiting or diarrhea lasting more than 24 hours, refusing food for more than a day, or unexplained weight loss. Retching that produces nothing, a swollen tight belly, and restlessness are the signs of bloat, a true emergency. Blood in vomit, black tarry stools, or a pet that has stopped eating and passing droppings altogether also needs a vet now.
- At what age do Great Danes start having health problems?
- Inherited conditions can show up in the first few years. Age-related problems like arthritis, kidney decline, and cancer cluster in the last third of a Great Dane's 7–10 years lifespan, so twice-yearly checkups from about 4 years old catch most things early.
- What are the signs a Great Dane is dying?
- The signs that a Great Dane is nearing the end are refusing food and water, being unable to stand or get to the bathroom without help, pain that medication no longer reaches, withdrawing from the family, and more bad days than good over two weeks. Our when-to-say-goodbye guide for the Great Dane walks through the quality-of-life scale vets use and what euthanasia involves.
- What's the best diet for a Great Dane?
- Great Danes do best on high-quality dog food appropriate for their life stage (puppy/kitten, adult, senior). Breed-specific health concerns may warrant specialized diets. Consult your vet rather than following general advice online.
- How often should I take my Great Dane to the vet?
- Annual wellness exams for adult Great Danes, twice yearly for seniors (typically 7+ for dogs). More frequent visits if your Great Dane has known health conditions. Preventive care catches issues before they become emergencies.
Keep their memory close
If you're facing a difficult time, these may bring comfort.
Related Guides
When to Say Goodbye to Your Great Dane
Signs it may be time, the quality-of-life scale, and what to expect
Great Dane Gastric Dilatation-Volvulus (Bloat/GDV)
Signs, progression, and when to act
Coping with Great Dane Loss
Support and guidance for grieving
Great Dane Memorial Ideas
Create a lasting memorial for your Great Dane