When you think of dogs, images of small, fluffy companions might pop into your mind. However, the world of dogs is vast and diverse, encompassing a variety of sizes, shapes, and temperaments. Some breeds are so large that they could easily be mistaken for small ponies — and with their giant size often comes equally big hearts and personalities! In this article, we’ll explore the 10 largest dog breeds in the USA, along with 5 that are often overlooked but deserve recognition. Whether you’re a dog enthusiast or simply curious, read on to discover these magnificent breeds and what makes them such lovable gentle giants.
Great Dane: The Gentle Giant

Great Danes are often referred to as gentle giants. Towering over many other breeds, a male Great Dane can stand up to 32 inches tall at the shoulder and weigh between 140 to 175 pounds. Despite their formidable size, these dogs are known for their friendly and affectionate nature. They often think of themselves as lap dogs, much to the amusement of their owners. Great Danes are great family pets, but they do require plenty of space to move around. Imagine a horse in a dog’s body – that’s the Great Dane for you!
Mastiff: The Mighty Protector

Mastiffs are considered one of the heaviest dog breeds, with some weighing over 200 pounds. Known for their protective instincts, they have been guardians of homes for centuries. Their imposing size and fierce appearance can be intimidating, but beneath that exterior lies a heart full of love and loyalty. Mastiffs are gentle with children and form strong bonds with their families. However, due to their size, they need proper training and socialization to ensure they are well-mannered.
Saint Bernard: The Legendary Rescuer

Saint Bernards are perhaps most famous for their role as rescue dogs in the Swiss Alps. Weighing between 140 to 180 pounds, these dogs are a blend of strength and gentleness. Their thick, warm coats make them perfect for cold climates. Saint Bernards are known for their patience and good nature, making them excellent companions for families with children. They do, however, drool quite a bit, so be prepared for some slobbery kisses!
Newfoundland: The Water Lover

The Newfoundland dog is a true workhorse, originally bred for working with fishermen in the icy waters of Newfoundland, Canada. These gentle giants weigh between 100 to 150 pounds and are known for their swimming capabilities. Their webbed feet and water-resistant coat make them excellent lifeguards, and they have been known to save people from drowning. Newfoundlands are calm, gentle, and great with kids, making them ideal family pets.
Irish Wolfhound: The Tallest of Them All

As the tallest dog breed, Irish Wolfhounds can stand up to 34 inches tall at the shoulder. Historically bred for hunting wolves in Ireland, these dogs are now beloved for their gentle and friendly disposition. Despite their height, they are not particularly heavy, usually weighing between 140 to 180 pounds. Irish Wolfhounds are known for their loyalty and are often described as having a heart as big as their body.
Leonberger: The Lion-Like Companion

Leonbergers, with their lion-like mane, are a sight to behold. Weighing in at 90 to 170 pounds, these dogs are a blend of strength, elegance, and grace. Originally bred as working dogs, they are now cherished for their affectionate and loyal nature. Leonbergers are known for being gentle with children and are often used as therapy dogs due to their calm demeanor. Their thick double coat requires regular grooming to keep them looking majestic.
Bernese Mountain Dog: The Loyal Worker
The Bernese Mountain Dog, with its striking tricolor coat and friendly face, is hard to overlook. Weighing between 70 to 115 pounds, these dogs were originally used for pulling carts and herding cattle in the Swiss Alps. Bernese Mountain Dogs are known for their loyalty and gentle nature, making them wonderful family pets. They thrive in cold climates and enjoy being active, so they’re perfect for families who love outdoor activities.
Anatolian Shepherd: The Guardian of Flocks

The Anatolian Shepherd is a powerful and independent breed, originally used to guard livestock in Turkey. Weighing between 90 to 150 pounds, these dogs are known for their protective instincts and loyalty to their family. They are reserved with strangers but form strong bonds with those they trust. Anatolian Shepherds are highly intelligent and require an experienced owner who can provide firm and consistent training.
Great Pyrenees: The Majestic Protector

The Great Pyrenees is a regal and majestic breed, known for its striking white coat and protective nature. Weighing between 85 to 115 pounds, these dogs were originally used to guard sheep in the Pyrenees Mountains. Great Pyrenees are gentle with children and fiercely protective of their families. They are independent thinkers and require consistent training and socialization to ensure they are well-behaved.
Tibetan Mastiff: The Ancient Guardian

Tibetan Mastiffs are one of the oldest and largest breeds, weighing between 70 to 150 pounds. Known for their protective and aloof nature, they were originally used to guard livestock in the Himalayas. Tibetan Mastiffs are independent, strong-willed, and require an experienced owner who can provide firm guidance. Despite their serious demeanor, they form strong bonds with their families and are incredibly loyal.
Kangal: The Overlooked Protector

While not as well-known, the Kangal is a formidable breed hailing from Turkey. Weighing between 110 to 145 pounds, these dogs were traditionally used to protect livestock from predators. Kangals are known for their strength, loyalty, and protective instincts. They are reserved with strangers but form strong bonds with their family. Due to their intelligence and independence, they require consistent training and socialization.
Boerboel: The South African Guardian

The Boerboel is a powerful breed from South Africa, weighing between 150 to 200 pounds. Originally bred to protect homesteads from predators, they are known for their strength and loyalty. Boerboels are confident, intelligent, and require an experienced owner who can provide firm guidance. Despite their imposing appearance, they are gentle with children and form strong bonds with their families.
Komondor: The Corded Protector

The Komondor, with its distinctive corded coat, is a unique and striking breed. Weighing between 80 to 100 pounds, these dogs were originally used to guard livestock in Hungary. Komondors are known for their protective nature and loyalty to their family. Their corded coat requires regular maintenance to prevent matting. Despite their serious demeanor, they form strong bonds with their family and are gentle with children.
Kuvasz: The Hungarian Guardian

The Kuvasz is a majestic and powerful breed, weighing between 70 to 115 pounds. Originally used to guard livestock in Hungary, they are known for their protective instincts and loyalty to their family. Kuvaszok are intelligent, independent, and require consistent training and socialization. Despite their aloof nature, they form strong bonds with their family and are gentle with children.
Estrela Mountain Dog: The Portuguese Protector

The Estrela Mountain Dog is a rare and overlooked breed from Portugal, weighing between 77 to 132 pounds. Originally used to guard livestock in the Estrela Mountains, they are known for their strength and loyalty. Estrela Mountain Dogs are intelligent, independent, and require an experienced owner who can provide firm guidance. Despite their serious demeanor, they form strong bonds with their family and are gentle with children.
Jen is a passionate nature lover and ocean conservationist. She has dedicated her life to protecting the environment and preserving the beauty of the natural world. Growing up in a small coastal town, Jen sincerely appreciated the ocean and its inhabitants. She has spent countless hours exploring the shoreline, learning about the creatures that inhabit the waters, and advocating for their protection. Jen is an active member of ocean conservation organizations, and she is committed to educating the public about the importance of conserving wildlife and the natural environment.