Great Dane
The Great Dane is one of the tallest dog breeds, combining elegance with power. Despite their imposing size, Great Danes are gentle, affectionate family dogs known as 'gentle giants.' Their short lifespan is the breed's greatest concern.
6–10
years lifespan
140–175
lbs (male)
30–32
inches tall (male)
moderate
energy level
Temperament
How Old Is Your Great Dane in Human Years?
Use our breed-specific calculator to find out, plus get personalised health and care guidance for your dog’s exact age.
Open Great Dane Age CalculatorCommon Health Conditions
Bloat/GDV
Great Danes have the HIGHEST bloat rate of any breed — lifetime risk ~40%. Leading cause of death.
Typical onset: 2–8 years
Dilated Cardiomyopathy (DCM)
Heart muscle disease leading to poor pumping function. Common in giant breeds.
Typical onset: 3–8 years
Hip Dysplasia
Common in giant breeds (~15% per OFA).
Typical onset: 1–3 years
Osteosarcoma (Bone Cancer)
Aggressive bone cancer. Giant breeds at highest risk.
Typical onset: 4–8 years
Wobbler Syndrome
Cervical vertebral instability causing spinal cord compression.
Typical onset: 2–6 years
Lifespan Factors
The median lifespan for a Great Dane is 8 years. Key factors that influence longevity:
- bloat/GDV (leading cause of death)
- DCM
- hip dysplasia
- osteosarcoma
- Wobbler syndrome
When Is a Great Dane Considered Senior?
Great Danes are generally considered senior at around 5 years of age. At this point, you should increase vet visits to twice yearly and watch for age-related health changes.
Check your Great Dane’s age in human years →