Top-10 Biggest Dogs in the World, Check the List

Dogs come in all shapes and sizes, from tiny teacup breeds to massive giants that can leave you in awe. If you’ve ever wondered about the largest dogs on the planet, you’re in for a treat. In this article, we’ll explore the top 10 biggest dogs in the world, showcasing the impressive stature and gentle nature of these magnificent canines.

World’s Largest Dog Breed in the World

As of 2025, the record for the world’s largest dog belongs to an English Mastiff named Aicama Zorba, who weighed an incredible 343 pounds. Normally, male mastiffs weigh between 160–230 pounds and females between 120–170 pounds, with an average height of about 30 inches at the shoulder. Zorba’s size was extraordinary, far above the usual range, making him the biggest dog ever recorded in history.

Responsibilities of Owing a Biggest Dog in the World

Owning a large dog entails a unique set of responsibilities, and prospective owners should be well-prepared for the challenges associated with bringing a sizable breed into the family. According to the American Kennel Club (AKC), there are several key considerations for those contemplating the companionship of a large dog:

1. Developmental Pace: Larger dog breeds generally undergo a slower maturation process, both physically and mentally, compared to their smaller counterparts. This demands heightened vigilance in managing their joint development to prevent potential injuries.
2. Space Requirements: Accommodating a large dog involves more than just providing ample living space. Owners must invest in appropriately sized essentials such as beds, toys, and food bowls. Additionally, creating an environment conducive to their size is crucial for their overall well-being, allowing them the freedom to move and play comfortably.
3. Financial Commitment: The adage “bigger dog, bigger bills” holds true. The costs associated with larger breeds extend beyond the mere size of toys and supplies. Larger quantities of food, specialized accessories, and increased veterinary expenses contribute to a higher overall financial commitment. Prospective owners should also anticipate higher premiums for pet insurance tailored to large breeds.
4. Behavioral Training Emphasis: Comprehensive behavioral training is paramount for owners of large dogs. Behaviors that might be overlooked in smaller breeds, such as jumping on people or leash pulling, can pose more significant challenges and potential dangers with larger dogs. Therefore, consistent and appropriate training from the outset is essential to ensure a well-behaved and manageable companion.

Top-10 Biggest Dogs in the World

Massif breed of dog with the average weight of 120-230 pounds holds the title of the biggest dog in the world, followed by Boerboel, Tosa Inu, Saint Bernard and Great Dane.

Here is the list of top-10 biggest dogs in the world:

Biggest Dog Breed in the World – Mastiff

Average weight: 120-230 pounds

Height: 30 inches

Life Span: 6 to 10 years

The Mastiff is known as the biggest dog breed in the world. These dogs can grow up to 30 inches tall and weigh as much as 230 pounds. Despite their huge size and strong, muscular build, mastiffs are gentle, loyal, and protective. With their broad bodies and squished faces, they look powerful yet lovable, making them wonderful family companions who are admired for their affection and loyalty.

Second Biggest Dog in the World – Boerboel

Average weight: 150-200 pounds

Height: 24-27 inches (male) 22-25 inches (female)

Life Span: 9-11 years

Hailing from South Africa, the Boerboel is a sturdy canine celebrated for its athleticism and vigilant nature. Its name, derived from the Dutch term “Boer,” signifying farmer, pays homage to its historical role as a loyal companion to Dutch and German settlers in 17th-century South Africa. Evolving through crossbreeding, the boerboel amalgamates various large guard dog breeds. Initially employed for significant game hunting and safeguarding homesteads, today, these dogs continue their steadfast commitment to protecting and caring for their cherished families.

World’s Third Biggest Dog – Tosa Inu

Average weight: 100-200 pounds

Height: 21.5 to 23.5 inches

Life Span: 10-12 years

Originating from Shikoku island, the Tosa Inu, also known as the Japanese mastiff, has a history rooted in dog fighting. Bred through a program that involved crossing Shikoku Inu with western breeds like mastiffs, bulldogs, Great Danes, and German pointers, this canine holds a revered status in Japan similar to sumo wrestlers. Despite its reserved demeanor around strangers, the Tosa Inu displays a patient and affectionate nature toward its family. Renowned for its vigilance, it excels as a watchful guardian of the home, securing its place as the third-largest dog in the world.