Great Dane: Temperament, Size, Lifespan & Care

Great Dane temperament and personality

VCA describes the Great Dane as gentle and calm, with strong bonds to its family, and notes that some are reserved with strangers while younger dogs can be very energetic. The breed's reputation as a gentle giant is earned: a well-raised adult is usually friendly, patient and happiest lying close to its people.

That calm takes time. Danes are slow to mature, and a 100-pound adolescent with a puppy's judgment can clear a coffee table with one swing of its tail. Expect a playful, clumsy teenager for the first two years, and plan training, a dog bed made for giant breeds and management around a dog that will soon be taller than your kitchen counter when it stands up.

How big do Great Danes get?

The AKC lists males at 30 to 32 inches at the shoulder and 140 to 175 pounds, and females at 28 to 30 inches and 110 to 140 pounds. The breed standard sets 30 inches as the minimum for males and 28 inches for females, with more height preferred. VCA gives an overall range of 28 to 32 inches and 110 to 175 pounds.

Growth is fast, and that is where the risk lies. VCA lists hip dysplasia, osteochondritis dissecans and hypertrophic osteodystrophy among puppy-stage problems, all linked to developing joints and bone. Ask your vet about a large-breed puppy diet and a target growth rate, and keep a young Dane lean rather than chasing size.

Great Dane lifespan and common health issues

Life expectancy is short. The AKC lists 7 to 10 years and its lifespan guide puts the breed at 8 to 10, and VCA says Danes count as seniors from about age 5. VCA's breed page names gastric dilatation-volvulus, dilated cardiomyopathy, hypothyroidism, wobbler syndrome, glaucoma and megaesophagus in adults, and bone cancer, joint disease and cataracts in seniors.

Bloat, or gastric dilatation-volvulus, is the one every owner must know. The stomach fills with gas and can twist, and it is a life-threatening emergency. A swollen belly, unproductive retching, restlessness or drooling means go to an emergency vet immediately. Ask your vet about preventive gastropexy, and ask a breeder for heart, hip and thyroid results on both parents.

Exercise needs

VCA recommends moderate daily activity, kept controlled during growth, and warns against high-impact exercise while the joints develop. For an adult that usually means two good walks a day plus some free play in a fenced area. Danes enjoy a gallop but tire faster than smaller, more athletic breeds.

For puppies, skip long runs, stairs and jumping in and out of vehicles until your vet says growth is complete, often around 18 months to two years. Avoid hard exercise for an hour or so either side of a meal, since many vets suggest this to lower bloat risk in deep-chested breeds.

Great Dane grooming and shedding

The short, smooth coat is easy. VCA rates grooming needs as low and shedding as moderate, and recommends weekly brushing with a rubber curry or bristle brush. A bath every month or two is enough for most dogs, and more often only if they roll in something.

The real grooming jobs are drool, nails and ears. VCA rates drooling as moderate to high, so keep towels handy. Long nails change how a heavy dog stands, so trim or grind them every couple of weeks. Clean the ears weekly and brush the teeth several times a week.

Training a Great Dane

VCA says the breed needs early training and socialization, with consistent, positive methods. Start leash manners on day one, because a dog that pulls at 20 pounds will pull at 150. Teach a solid sit for greetings, a reliable down-stay and a calm wait at doors.

Danes are generally willing but sensitive, and harsh corrections backfire. Short sessions, food rewards and lots of exposure to people, dogs, traffic and new places in puppyhood produce a confident adult. Puppy classes are worth it, if only so your dog learns to stay calm around other dogs while it is still small enough to hold.

Are Great Danes good with kids and other pets?

VCA says Great Danes are generally good with children under supervision and usually compatible with other pets when properly introduced. Many are remarkably tolerant, but sheer size is the issue: a happy tail or a playful bump can knock over a small child.

Supervise every interaction with toddlers, teach children not to climb on the dog, and give the dog a large bed in a quiet spot where it can rest undisturbed. Most Danes live peacefully with cats and other dogs they are raised with, though play with small dogs needs watching.

What a Great Dane needs at home

Plan the house around the dog. You will need an extra-large or giant crate, a big orthopedic bed for a giant breed that supports heavy joints, raised space to eat that does not require crouching, and a vehicle the dog can get into, ideally with a ramp. Secure fencing should be tall enough that the dog cannot lean over it.

For daily care, keep a rubber curry brush, a nail grinder, ear cleaner and a dog toothbrush. A well-fitted harness for a Great Dane and a strong leash, sturdy chew toys sized for a giant breed, and slow-feeder bowls to stop gulping complete the basics. Discuss a feeding routine with your vet early.

This page is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your pet.