When you think of giant dog breeds, you might picture calm, slow-moving companions lounging around the house. But did you know that many of these gentle giants are actually full of energy and love to stay active? From powerful Great Danes that adore a good sprint to athletic Irish Wolfhounds that thrive on outdoor adventures, active giant dog breeds combine impressive size with a zest for life.
These dogs are more than just large — they’re playful, strong, and often need plenty of exercise to stay healthy and happy. Whether you’re a hiker, runner, or just someone who loves spending time outdoors, these majestic breeds can be the perfect partners for your active lifestyle.
In this guide, we’ll introduce you to the most active giant dog breeds, highlight their unique traits, and help you decide which of these towering pups might be the best fit for your home.
Active Giant Dog Breeds
1. Kuvasz
Height: 26–30 inches
Weight: 70–115 pounds
Energy level: Moderate to high
Often mistaken for the Great Pyrenees, the Kuvasz is another one of the largest dog breeds built to withstand harsh climates. While both are heartwarming giants with snowy white coats, the Kuvasz is more agile and independent, according to WebMD.
Originally used to guard livestock in cold climates, this breed thrives when it has a job and space to roam. Unlike the Pyrenees, which is more laid-back, the Kuvasz has a sharper watchdog instinct and will stay alert.
This breed can be reserved with unknown people but is deeply loyal to its family. They tend to shed a lot and need regular grooming.
With early socialization and positive reinforcement, they do well with other pets. A Kuvasz needs daily mental and physical stimulation to stay balanced, making it a great match for experienced owners who appreciate both beauty and brains.
2. Irish Wolfhound
Height: 30–35 inches
Weight: 105–180 pounds
Energy level: Moderate
The Irish Wolfhound, one of the tallest dog breeds globally, looks imposing, but its heart is pure gold. Despite their size, they’re not clumsy or lazy.
They enjoy a good sprint and are happy to accompany you on walks or hikes. Known for being extremely protective without aggression, these dogs will silently stand by to protect their people.
Originally bred for hunting wolves, they are fast runners with surprising grace. Due to their size, they need strong leash training for walks and a bit of room to stretch those long legs.
They are very friendly with children and other pets, but their size can be overwhelming without advanced training. They rarely bark, don’t drool much, and enjoy calm homes with gentle leadership. If you want a noble, loving giant who knows when to play and when to chill, the Wolfhound may be your match.
3. Tibetan Mastiff
Height: 24–30 inches
Weight: 70–150 pounds
Energy level: Moderate
Originally bred to guard homes and livestock in the Himalayas, the Tibetan Mastiff is as majestic as it is strong, as per PetMD. This breed is independent, watchful, and deeply loyal—but not for the faint of heart.
They need enough space to move around and thrive in cool weather. Their thick coat handles cold climates beautifully but requires regular grooming.
Tibetan Mastiffs can be strong-willed and wary of strangers, so training and socialization are a must. They’re prone to some health problems, especially joint issues, if overexercised too early.
This breed isn’t one to play fetch all day, but they enjoy structured walks and guarding their home turf. Their protective nature makes them excellent guardians, but they bond tightly with their people.
Not barky without reason, they’re surprisingly quiet indoors and great for experienced dog owners seeking a loyal, unique companion.
4. Scottish Deerhound
Height: 28–32 inches
Weight: 75–110 pounds
Energy level: Moderate to high
According to Wikipedia, they were named for their historic role in deer hunting. The Scottish Deerhound is a graceful, athletic giant built for speed and endurance. As an ancient breed, they carry a regal yet laid-back air.
While they love lounging, don’t be fooled—these are powerful dogs that crave vigorous exercise and open space.
Their sweet, calm nature makes them wonderful around children and other pets, but they do have a strong prey drive. It’s best to supervise them around smaller animals.
They’re polite with strangers and rarely bark. Their wiry coat sheds moderately and requires minimal upkeep. Known for being incredibly affectionate and easygoing indoors, they need an outlet for energy outdoors—think daily runs, hikes, or fenced yard sprints.
If you want a noble, low-maintenance giant who balances athleticism with affection, the Deerhound checks all the boxes.
5. Leonberger
Height: 25.5–31.5 inches
Weight: 90–170 pounds
Energy level: Moderate to high
The name Leonberger comes from the city of Leonberg, Germany, where this breed was developed to resemble a lion. But behind that regal look is a loving, hard-working soul.
These dogs were once used to herd cattle, protect livestock, and even hunt wild boars. Despite their strength, they make gentle and loyal family pets.
Leonbergers are known for their steady temperament and eagerness to be with their people. They’re excellent guard dogs without being aggressive and need both physical and mental exercise to thrive.
They shed quite a bit and require brushing, but their love is worth it. While friendly with children, early socialization is key to helping them do well with other pets.
They love swimming, hiking, and anything that involves staying active with the family. If you want a dog that’s protective yet playful, the Leonberger is a fantastic fit.
6. Newfoundland
Height: 26–28 inches
Weight: 100–150 pounds
Energy level: Moderate
With webbed feet and a water-resistant coat, the Newfoundland is made for water rescues—and love.
These big dogs are well-suited for cold weather and excel as service animals, therapy dogs, and family companions. Their even-tempered nature makes them a joy to be around, especially with children.
Though massive in size, they are calm and loving, often acting like gentle lifeguards at home. They do need regular grooming and are prone to joint problems if overexercised when young.
But for the right breed lover, their loyalty and bravery are unmatched. While not overly playful, they enjoy swimming, brisk walks, and cool climates.
Their drooling can be heavy, but their quiet presence is extremely important to those needing emotional support. If you’re looking for a loving giant who thrives on water and kindness, the Newfoundland won’t let you down.
7. Bernese Mountain Dog
Height: 23–27.5 inches
Weight: 70–115 pounds
Energy level: Moderate
With its distinctive tri-colored coat and expressive eyes, the Bernese Mountain Dog is as striking as it is sweet.
Originally from the Swiss Alps, this gentle giant was used in ancient times to pull carts and help on farms. Today, it’s one of the smartest, most loyal large breeds around.
Berners are alert without being aggressive and thrive in cool climates. Their fur can be hard to manage—yes, they shed—but their kind nature makes it easy to forgive.
These dogs are incredibly loving with kids and do well with other pets if introduced early. While they don’t need intense workouts, they do enjoy daily walks, hikes, and yard time. Their friendliness and patience make them wonderful therapy and family dogs.
If you want a dog who’s both a cuddle buddy and a mountain mover, the Bernese brings the best of both worlds.
Conclusion
Active giant dog breeds bring the best of both worlds—powerful enough to be sled dogs or guard homes, yet gentle enough to be loving family pets.
These big breeds may look intimidating, but many are calm, loyal, and great with other dogs. Whether you’re drawn to the noble stance of a royal dog or the snuggly nature of a big dog with a soft heart, there’s a perfect match for every lifestyle.
Just remember—giants need space, structure, and love. With early training and daily exercise, these majestic companions become unforgettable parts of the family.
