Top 5 Dog Breeds That Grow the Most from Puppies to Adults

By Ehtesham

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Watching a puppy grow into a full-grown dog is a remarkable journey, and the rate at which they grow can vary significantly between breeds.

Some dog breeds undergo incredible transformations, both in size and appearance, as they transition from playful puppies to majestic adults. In this article, we’ll explore the top five dog breeds of 2023 that experience the most remarkable growth during their journey to adulthood.

Great Dane

Great Danes are known for their colossal size and are often referred to as “gentle giants.” These majestic dogs experience one of the most dramatic growth spurts in the canine world.

As puppies, they start out as adorable, lanky balls of fur, but within a year, they can grow to be over 30 inches tall at the shoulder and weigh up to 175 pounds. Their rapid growth rate makes them one of the most striking examples of puppy-to-adult transformation.

Saint Bernard

Saint Bernards are famous for their rescuing abilities in the Swiss Alps, but they are also known for their remarkable growth.

These fluffy pups can start their lives weighing around 1 to 2 pounds, but within a year, they can tip the scales at 140 to 180 pounds. Their thick, dense fur adds to the illusion of growth, making them look even more massive as adults.

English Mastiff

English Mastiffs are among the heaviest dog breeds in the world, and their growth from puppyhood to adulthood is awe-inspiring. A Mastiff puppy can weigh around 15 pounds at eight weeks old, but by the time they reach their adult size at around 18 months, they can weigh between 160 to 230 pounds or even more.

Irish Wolfhound

Irish Wolfhounds are often referred to as the tallest dog breed, and their growth reflects this distinction. These gentle giants start as small, delicate puppies but can reach a height of 30 inches or more at the shoulder within a year. Their slender build makes their growth even more visually striking.


Newfoundlands are known for their love of water and incredible strength. As puppies, they are fluffy and adorable, but they undergo substantial growth in their first year.

They can start at around 10 pounds but reach a weight of 100 to 150 pounds when fully grown. Their growth is a testament to their potential as water rescue dogs.


In conclusion, some dog breeds undergo truly remarkable growth transformations as they progress from puppies to adults.

The examples listed here, including Great Danes, Saint Bernards, English Mastiffs, Irish Wolfhounds, and Newfoundlands, are not only impressive in size but also in their ability to capture our hearts with their gentle and loving nature.

Despite their enormous growth, they remain loyal and devoted companions to their families.


Are these breeds suitable for apartment living?

These breeds require ample space and are best suited for homes with large yards or open areas.

Do these breeds have specific health concerns due to their size?

Yes, many giant breeds are prone to certain health issues, and regular veterinary check-ups are essential.

How can I ensure my giant breed puppy grows up healthy?

Proper nutrition, exercise, and socialization are crucial for the healthy growth and development of giant breed puppies.

Are these breeds good with children and other pets?

Yes, many of these breeds are known for their gentle and friendly nature, making them good companions for families.

What is the lifespan of these giant breeds?

Giant breeds tend to have shorter lifespans, typically ranging from 6 to 12 years, depending on the breed and individual health.

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