Great Dane

At a glance

Weight

110–175 lb

Height

28–34 in

Lifespan

7–10 years

Exercise / day

45–60 min

Energy

moderate

Shedding

moderate

Temperament

gentle, affectionate, patient, confident

With kids

with supervision

Common health predispositions

• Gastric dilatation-volvulus (bloat). Great Danes have the highest lifetime bloat incidence of any breed (roughly 40% in longitudinal studies). Discuss prophylactic gastropexy at spay/neuter, feed two smaller meals, and know the emergency signs, distended belly, unproductive retching, and collapse are veterinary emergencies with a narrow survival window.
• Dilated cardiomyopathy. Common in the breed. Annual cardiac exam by a board-certified cardiologist starting at 2-3 years, including echocardiogram and Holter monitor. Diet-associated DCM has been reported with certain grain-free formulations, prefer WSAVA-compliant nutrition.
• Osteosarcoma. Giant breeds are the highest-risk group. A persistent limp in an adult Great Dane is a same-week vet visit with radiographs. Median age at diagnosis is 7-9 years; early amputation plus chemotherapy remains the standard of care for appendicular cases.
• Hip and elbow dysplasia. OFA hip and elbow scores on both parents; PennHIP is more informative in a young Dane. Growth-rate matters, over-feeding a puppy accelerates dysplasia risk.
• Wobbler syndrome (cervical spondylomyelopathy). Reported in the breed. A wobbly hindquarter gait or neck pain warrants neurologic imaging (MRI); conservative management sometimes suffices, ventral slot surgery is used in severe compression.
• Hypothyroidism. Common in giant breeds. Coat changes, weight gain, and lethargy warrant a full thyroid panel, not just a T4.

Gear and diet implications

• Best bed for a Great Dane. XL orthopedic memory-foam bed (min 54 in) is a lifetime purchase, not a nice-to-have; joint support pays back over the short lifespan. Multiple beds around the house prevent hard-surface pressure sores.
• Best bowl for a Great Dane. Wide, shallow, floor-level bowl; older raised-bowl advice is now considered a bloat risk factor (Glickman et al., 2000).
• Best crate for a Great Dane. XXL 54 in crate for the adult; expect to buy a puppy crate and an adult crate, not one that grows with the dog.
• Best harness for a Great Dane. Y-front harness rated for a giant breed; a well-trained loose-leash Great Dane is safer than any equipment.

What the breed was built for

Despite the name, the Great Dane is a German breed (Deutsche Dogge) developed from mastiff and sighthound crosses to hunt wild boar. The job selected for size, courage, and speed. Modern breeding has softened the temperament, most pet-home Danes are famously gentle 'apartment giants' as long as their space and joint needs are met.

Selection for extreme size has come at a real cost, giant-breed dogs have shorter median lifespans and higher rates of cardiac and orthopedic disease than any other body size. A prospective owner should approach the breed with clear-eyed expectations: 7-10 good years, giant-sized food and vet bills, and household planning around a 150 lb couch companion.

Training and behavior

A friendly 150 lb dog is still a 150 lb dog. Loose-leash walking, polite greetings, and a solid recall are not optional, an untrained Great Dane can knock down an adult by accident. Start puppy class before 16 weeks and continue through adolescence.

The breed is famously biddable and sensitive; harsh corrections shut a Dane down and often produce learned helplessness. Reward-based training and short sessions work well. Adolescent growth is rapid and joint-fragile, avoid stair repetition, hard jumps, and forced running until growth plates close around 18-24 months.

Nutrition and growth

Great Dane puppies grow faster than any other breed and are the most nutrition-sensitive during that growth. Feed a WSAVA-compliant large-breed puppy formula with controlled calcium (0.7-1.2% dry matter) until 18-24 months, over-supplementing calcium accelerates orthopedic disease. Do not free-feed; measure meals and target lean body condition (score 4/9), obesity in a growing Dane amplifies every downstream orthopedic risk.

Adult Danes typically eat 6-10 cups of food daily split into two meals, exact quantities depend on activity and the food's caloric density. Avoid feeding within an hour of vigorous exercise, and use a slow feeder to reduce air-swallowing (aerophagia is a documented bloat contributor).

What to look for in a breeder or rescue

• OFA hip, elbow, and thyroid; PennHIP is helpful in young Danes.
• Annual cardiac exam by a board-certified cardiologist on breeding stock.
• CAER ophthalmologist exam.
• Discuss prophylactic gastropexy timing with the breeder and vet.
• Ask about longevity in the parents' and grandparents' generations, a 10+ year pedigree is a genuine buying signal.
• Rescue alternative: giant-breed rescues have a steady supply of adult Danes; adopting a 3-year-old is a meaningful welfare choice and gives you visibility into the adult temperament.