Giant dog breeds are often seen as big, cuddly companions that fill a room with their presence. However, some of these dogs are heavyweight champions. If you’re a dog lover or considering adopting a giant breed, it’s important to understand their unique traits.
From their size to their gentle nature, heavyweight giant dog breeds have distinct characteristics that make them special. Whether you’re intrigued by their strength or their lovable personalities, exploring these majestic dogs will give you a deeper appreciation for their role as both family pets and loyal companions.
Heavyweight Giant Dog Breeds
1. Saint Bernard
The Saint Bernard is one of the most well-known heavyweight giant dog breeds, with a history that dates back to the Swiss Alps. These dogs were originally bred as rescue dogs, aiding monks in saving travelers who got lost in the snow. Their gentle nature and loyalty make them excellent family dogs, though their massive size can be intimidating. Did you know that the Saint Bernard’s thick double coat was essential for keeping them warm in cold weather?
Standing at over 30 inches tall, as per PetMD, the Saint Bernard can weigh up to 120-180 pounds. Despite their large size, they’re known for their calm demeanor. As a gentle giant, this dog breed loves children and is a loyal companion. If you’re thinking of adopting one, make sure you have space—this big dog needs room to roam!
Saint Bernards are intelligent and trainable, but their size requires a firm hand when it comes to training. Early socialization is key to ensure they interact well with other animals and people. They’re naturally friendly and enjoy being around family members.
Their droopy eyes and broad faces only add to their lovable charm. While their size might make them unsuitable for apartment living, they’re perfect for homes with plenty of space. If you’re looking for a laid-back companion, the Saint Bernard is ideal.
Saint Bernards are incredibly affectionate breeds that thrive on human interaction. Their loyalty is unmatched, and they often become very attached to their families. They are known to be protective, especially when their loved ones are in danger. So, if you’re ready for a giant, loving protector, the Saint Bernard might be the right breed for you.
2. Neapolitan Mastiff
With a lion-like mane and a deep, powerful presence, the Neapolitan Mastiff is a breed that’s hard to miss. This dog was originally bred to guard estates and protect livestock. They’re naturally protective and have a strong guard dog instinct. The Neapolitan Mastiff can weigh up to 200 pounds and stand over 26 inches tall. But, despite their intimidating look, they are affectionate with their families.
The Neapolitan Mastiff is an ancient breed, originally used by royalty in Southern Italy. Their protective qualities make them excellent guard dogs, but they are also extremely loyal to their families. If you need a big dog with a powerful presence to guard your property, this breed has the qualities you need.
Despite their size, Neapolitan Mastiffs are known to be calm and gentle when properly trained. They have a deep bark and will not hesitate to defend their home from intruders. But they are not aggressive unless provoked, making them a great choice for families who need a protector.
Their large, wrinkled faces give them a unique look that is hard to forget. Although these dogs are gentle and affectionate with their families, they do require early training and socialization to prevent territorial behavior. They can be a bit stubborn, so consistency is important when training them.
The Neapolitan Mastiff’s massive size doesn’t just make them intimidating—it also makes them incredibly imposing. Their presence can deter unwanted visitors, but they are also known to be loyal and loving with the people they trust. If you want a big dog with a gentle yet protective nature, the Neapolitan Mastiff is a fantastic choice.
3. Leonberger
Imagine a dog with the grace of a lion and the strength of a bear—that’s the Leonberger for you! Originally bred as a working dog, this breed is known for its size and intelligence. Leonbergers can weigh up to 170 pounds, and with their thick double coat, they are suited for colder climates. They were bred to work with the French Mastiff in pulling carts and guarding properties.
Leonbergers are calm, gentle dogs who thrive on human interaction. They are often described as “gentle giants” because of their affectionate nature. Despite their size, they are excellent family dogs and are known to be particularly good with children. Their gentle demeanor makes them a perfect addition to any home.
Their thick coat requires regular grooming to prevent matting and to keep them comfortable. Leonbergers love being part of the family and are always eager to please. However, due to their size, they do require training and socialization to ensure they are well-mannered and well-behaved around people and other animals.
The Leonberger’s strength and intelligence make them excellent working dogs. They are naturally protective and make excellent guard dogs. However, they are not aggressive and are much more likely to warn intruders with a deep bark rather than charge.
Leonbergers are highly trainable, but their sheer size can be overwhelming for first-time dog owners. Early socialization and consistent training are essential to help them grow into well-rounded companions. If you’re looking for a large, friendly dog with an easy-going personality, the Leonberger is a great option.
4. Tibetan Mastiff
The Tibetan Mastiff is a breed with a fascinating history. Known for guarding livestock in the Himalayas, this breed is as ancient as it is large. Tibetan Mastiffs were bred to be fiercely protective, and they are known for their massive size and thick double coat that shields them from cold weather. As per Purina, these dogs weigh between 79–159 pounds and stand at least 26 inches tall.
Though they have a strong, independent nature, Tibetan Mastiffs are also loyal to their families. They are excellent guard dogs, making them a perfect choice for those looking for a protector. But with their intense guarding instincts, early training is a must.
The Tibetan Mastiff’s thick coat requires regular care, especially during shedding seasons. These dogs are known for their calm demeanor, but they can be aloof with strangers. Their natural protective instincts make them a fantastic option for families looking for a loyal dog that will always have their back.
Training a Tibetan Mastiff can be a challenge due to their independent nature, but once they bond with their owner, they are incredibly loyal. Early socialization is important to ensure they get along well with other pets and strangers. These dogs tend to be reserved around new people but warm up to those they trust.
The Tibetan Mastiff is not for everyone. Their size and temperament require an experienced dog owner who understands the breed’s needs. But if you’re prepared for the responsibility, this breed can be an incredibly rewarding companion.
5. English Mastiff
If you’re looking for a giant dog breed that’s equally known for its gentle temperament and size, the English Mastiff is a fantastic choice. With a history that traces back to ancient times, English Mastiffs were originally bred as large game hunters. These big dogs can weigh up to 230 pounds, with some individuals even exceeding that weight! Their broad chests and massive heads make them one of the tallest dog breeds.
Despite their imposing size, English Mastiffs are affectionate, friendly, and gentle with their families. They are often called “gentle giants” due to their loving nature. As family dogs, they are excellent with children and have a calm demeanor that makes them a favorite for many dog lovers.
English Mastiffs are highly loyal and protective of their families. Though they are not typically aggressive, they will not hesitate to protect their loved ones if they sense danger. Early training and socialization are key to ensuring that they remain well-mannered and friendly.
These dogs may be large, but they are relatively low-energy compared to other giant breeds. They enjoy lounging around the house and spending time with their families. However, due to their size, they require proper space and a sturdy home environment.
While their size may require extra care when it comes to feeding and health, the English Mastiff’s loyalty and affectionate nature make them one of the most beloved giant dog breeds. They’re ideal for families who want a dog that can be both a protector and a loving companion.
6. Newfoundland
The Newfoundland is another heavyweight giant dog breed that excels as a water rescue dog. With webbed feet and a water-repellent outer coat, they were originally bred to help Canadian fishermen. As per Hillspet, these dogs weigh between 100 to 150 pounds and are known for their strength and swimming abilities. Their thick double coat helps protect them in icy water, and their calm demeanor makes them great family pets.
Newfoundlands are often referred to as “gentle giants” because they are incredibly patient and affectionate with children. If you’re looking for a big dog that’s good around water and great with families, the Newfoundland is a top contender.
These dogs are naturally good swimmers and excel at water rescue work. They are known to save people who fall into rivers or lakes. With their massive size, they’re also capable of pulling a boat or carrying heavy loads. But they’re not just working dogs—they love being with their families.
While their size makes them suited for homes with plenty of space, Newfoundlands are generally laid-back and enjoy lounging around. However, they do need regular exercise to stay healthy. A daily walk or swim is usually enough to keep them happy and fit.
Newfoundlands are incredibly friendly with other animals, making them great companions for households with other pets. Their patient, tolerant nature makes them a favorite for families with young children. However, their size and strength mean they need a handler who can manage them properly.
7. Bordeaux Mastiff
The Bordeaux Mastiff, also known as the French Mastiff, is a massive dog with a strong guarding instinct. Originally bred to protect estates, this breed is loyal and protective of its family. They are excellent working dogs and can weigh up to 150 pounds. Despite their intimidating size, Bordeaux Mastiffs are affectionate and good with children.
These dogs are naturally territorial and will protect their home with fierce loyalty. However, with proper training, they are gentle with their families and make excellent pets. Their calm demeanor makes them suitable for families with young children, as they’re patient and kind.
Bordeaux Mastiffs have a thick, muscular build and need regular exercise to keep them healthy. While they are not overly energetic, they do require daily walks to stay fit. Their size means that training should be consistent and firm, but they respond well to positive reinforcement.
Their massive heads and muscular build make them one of the most imposing dog breeds, but they’re also one of the most affectionate. Bordeaux Mastiffs are extremely loyal and will form strong bonds with their families. They are excellent guard dogs and can also be loving companions.
If you’re looking for a breed that combines strength, protection, and affection, the Bordeaux Mastiff might be the right choice for you. With the right care and training, they can be a fantastic addition to any family.
Conclusion
Heavyweight large dog breeds offer a special mix of loyalty, strength, and gentle companionship. Though their size can be intimidating, most of these giant dog breeds are calm, loving, and great with families. From the towering Irish Wolfhound to the massive Mastiff, they bring a big presence—and an even bigger heart.
Caring for large-breed dogs does come with responsibilities. Their weight, food intake, and potential health issues mean you’ll need to stay on top of exercise, training, and regular checkups. But once they settle in, these big dog breeds become lifelong, devoted companions.
Thinking about getting a heavyweight giant dog breed? Or maybe you already have a gentle giant at home? Let us know in the comments—we’d love to hear your experiences and which large dog stole your heart!
