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Size can be a defining trait for dogs, and while small breeds are popular, the largest dog breeds are truly impressive. These gentle giants often weigh more than some humans and tower over other dogs, yet they are known for their calm, loyal, and affectionate personalities. Whether serving as working dogs or beloved family companions, these massive breeds showcase strength and heart. If you’re curious which dog breeds rank highest in size and weight, here are some of the world’s largest and heaviest dogs.
Great Dane
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Great Danes are often considered the largest dog breed, both in height and overall size. Known as “gentle giants,” Great Danes can reach heights of up to 32 inches at the shoulder and weigh anywhere between 140 to 175 pounds. Some individuals have been known to weigh even more. Their tall, slender build makes them stand out in any crowd, and when standing on their hind legs, they can easily reach over six feet tall. Despite their imposing size, Great Danes are known for their gentle and friendly nature, making them excellent family dogs. They enjoy lounging around, often trying to squeeze onto couches and beds, even if their size suggests otherwise.
English Mastiff
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English Mastiffs hold the title of being one of the heaviest dog breeds in the world. These massive dogs can weigh up to a whopping 230 pounds, with some individuals tipping the scales even more. English Mastiffs are known for their large, muscular build and broad heads, giving them a powerful and majestic appearance. Despite their size, they are gentle, calm, and affectionate, making them excellent family pets. English Mastiffs are protective and loyal, often forming strong bonds with their owners. While they don’t need a lot of exercise, they need plenty of space to stretch out and relax—after all, a 200-pound dog takes up quite a bit of room!
Saint Bernard
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Saint Bernards are another giant breed known for their impressive size and weight. Originally bred for rescue work in the Swiss Alps, Saint Bernards can weigh between 140 to 180 pounds and stand around 28 to 30 inches tall at the shoulder. Their thick, dense coats and strong build make them well-suited for cold climates. Saint Bernards are known for their friendly and patient temperament, especially around children, earning them a reputation as gentle family companions. Despite their large size, they’re not overly active dogs and are more than happy to relax with their human companions.
Newfoundland
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Newfoundlands are massive dogs with a heart to match their size. Weighing around 100 to 150 pounds, these gentle giants were originally bred for water rescue and working alongside fishermen. Standing around 28 inches tall, Newfoundlands have a thick, water-resistant coat that protects them in cold water and harsh weather. Known for their swimming abilities, Newfoundlands are strong and powerful, capable of rescuing people from the water. Their kind and patient nature makes them excellent family pets, especially for households with children. Their calm demeanor, paired with their giant size, makes them an unforgettable presence in any home.
Irish Wolfhound
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The Irish Wolfhound holds the distinction of being one of the tallest dog breeds, often standing over 30 inches at the shoulder. These graceful giants can weigh anywhere from 140 to 180 pounds, making them tall and heavy. Originally bred for hunting wolves and large game, Irish Wolfhounds have a long, lanky build, but don’t let that fool you—they’re still incredibly strong and powerful. Despite their hunting background, Irish Wolfhounds are known for their gentle and affectionate nature. They’re calm, friendly, and get along well with children, making them great family companions.
Leonberger
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Leonbergers are massive, fluffy dogs that can weigh between 120 to 170 pounds, with males often reaching even higher weights. Standing around 28 to 31 inches tall, these dogs are known for their lion-like mane and powerful build. Leonbergers were originally bred as working dogs and companions for European royalty, and they carry themselves with a regal presence. Despite their size and strength, they’re known for being gentle, loyal, and calm. Leonbergers are also excellent swimmers, thanks to their webbed feet, and they love spending time in the water. Their thick double coat requires regular grooming, but their affectionate nature makes them well worth the effort.
Tibetan Mastiff
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Tibetan Mastiffs are an ancient breed known for their protective instincts and massive size. These imposing dogs can weigh anywhere from 85 to 160 pounds, with some individuals reaching even heavier weights. Tibetan Mastiffs have a thick, fluffy coat that gives them a majestic and somewhat intimidating appearance. Originally bred to guard livestock in the Himalayas, Tibetan Mastiffs are known for their independence and strong protective instincts. Despite their large size and guardian nature, they can be quite affectionate and loyal to their families. However, their independent streak requires an experienced owner who can manage their strong-willed personality.
Dogue de Bordeaux
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The Dogue de Bordeaux, also known as the French Mastiff, is a powerful and muscular breed that can weigh between 120 to 140 pounds. These dogs are known for their massive heads and stocky build, giving them a commanding presence. Dogue de Bordeaux dogs were originally bred for tasks such as guarding and pulling heavy carts, and their strength is immediately apparent in their physique. Despite their imposing appearance, they are loyal and affectionate with their families. They form strong bonds with their owners and can be gentle, especially with children. Their calm demeanor makes them great companions, though their size means they need plenty of space to move around.
Great Pyrenees
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The Great Pyrenees is a majestic breed known for its large size and thick, white coat. These dogs can weigh between 85 to 160 pounds and stand around 27 to 32 inches tall. Originally bred as livestock guardians in the Pyrenees Mountains, these dogs are independent, protective, and calm. Their thick coats make them well-suited for cold weather, and their calm temperament allows them to remain relaxed and composed even in stressful situations. While they’re natural protectors, they’re also gentle and affectionate with their families, making them great companions for children and adults.
Neapolitan Mastiff
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Neapolitan Mastiffs are a breed known for their impressive size and distinct appearance. These massive dogs can weigh between 110 and 150 pounds, and their large, wrinkled faces and heavy, muscular build make them instantly recognizable. Neapolitan Mastiffs were originally bred for guarding, and they have a strong protective instinct that makes them excellent watchdogs. Despite their formidable appearance, Neapolitan Mastiffs are affectionate and loyal to their families. They’re calm and relaxed, preferring to lounge around the house rather than engage in high-energy activities. Their large size and wrinkled expression give them a unique, imposing, and endearing look.
When Your Dog’s Bed is Bigger Than Yours
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Living with one of these massive dog breeds means making a few adjustments, especially regarding space. These gentle giants tend to take over the couch, require extra-large beds, and know precisely how to make their presence felt. However, despite their impressive size, these dogs are some of the most loving, loyal, and laid-back companions you’ll find. So, if you ever notice that your dog’s bed seems to be taking up more room than your own, remember—it’s just part of the charm of living with a true gentle giant!
Toledo, United States.
