Great Pyrenees Size Guide: How Big Do Great Pyrenees Get?

In this Great Pyrenees size guide, we’re going to discuss the size and growth patterns of the Great Pyrenees dog. You’ll also get to try our interactive puppy growth calculator and size chart to predict your puppy’s full-grown size. Let’s dig in!

Our handy interactive puppy growth chart and calculator takes all the hard work out of predicting your puppy’s potential adult size. This helps you to know exactly what you are in for.

Great Pyrenees Size By Age Predictions

With a majestic look, calm nature, and a gorgeous coat, the Great Pyrenees sure does make an impression. The Great Pyrenees is known for its humongous size, which naturally, can seem intimidating to some. However, this dog is very affectionate and loyal, and has a laid-back attitude that will make the best companion to your family.

When it comes to adopting a new four-legged family member, their size is obviously one of the biggest factors in the decision making process. For instance, not all dogs can live comfortably in an apartment. Furthermore, knowing your pup’s size will help you calculate the cost you’ll be willing to spare for their food and other daily requirements like grooming. 

So how big do Great Pyrenees get? The Great Pyrenees can weigh anywhere between 85 to 160 pounds, and stand at 25 to 32 inches tall at the shoulder. Indeed, that’s a big boy! However, as this is a wide estimate, there are a few ways how we can get more specific. We’ll cover that in a moment. 

Are There Different Sizes Of Great Pyrenees?

Now that we know the average full-grown Great Pyrenees size, we can narrow it down to estimates that are more specific. Although the Great Pyrenees breed comes in just one size, there are some differences between the male and female pups.

Let’s have a look at the average Great Pyrenees size chart for males and females:

	Male Great Pyrenees	Female Great Pyrenees
Weight	100-160 pounds	85-115 pounds
Height	27-32 inches	25-29 inches
When Full-Grown?	18-24 months	18-24 months

*A dog’s height is measured from the highest part of their shoulder blades, which are also known as the withers.

We can see from the Great Pyrenees size chart above that males tend to be heavier and slightly taller than female dogs. Male Great Pyrenees usually weigh anywhere above 100 pounds up to 160 pounds, and stand at 27 to 32 inches tall. Females stay at the lower end of the scale with 85 to 115 pounds in weight, and 25 to 29 inches in height. 

Additionally, there are also the Pyrenean Mastiff and Pyrenean Shepherd, who some might confuse with the Great Pyrenees. Pyrenean Shepherds are actually much smaller dogs than both the Pyrenean Mastiff and Great Pyrenees. They usually weigh around 15 to 30 pounds, and stand at 15-21 inches tall at the shoulder.

On the other hand, the Pyrenean Mastiff is also a giant breed like the Great Pyrenees. However, the Pyrenean Mastiff can weigh even more – around 120 to 240 pounds. For your reference, Mastiffs are usually heavy boned, whereas the Great Pyrenees is a medium boned breed. 

Great Pyrenees Size Charts & Growth Patterns 

Like many large breed dogs, the Great Pyrenees take longer to reach their full-grown size than smaller dogs. Usually, Great Pyrenees pups will go through the most rapid growth stages before their first birthday. By that time, they’ve usually reached their full height, and most of their adult weight. 

Here’s an average Great Pyrenees puppy size chart:

Age	3 months	6 months	12 months	18-24 months
Weight	37-40 pounds	69-73 pounds	100-109 pounds	110-124 pounds
Height	15-21 inches	25-30 inches	27-32 inches	27-32 inches

As we can see from the Great Pyrenees size chart, they will usually reach around half their adult weight by the time they’re 6 months old. By the time they’re 12 months old, they’ve typically reached about 80% of their adult weight. After their first birthday, their growth will slow down, and plateau around 18 to 24 months of age. 

It’s important we note that large breed puppies like Great Pyrenees need lots of energy and nutrients to grow into healthy, full-grown dogs. Make sure to read more about puppy and dog feeding guidelines. 

Is A Great Pyrenees A Large Or Giant Breed?

The Great Pyrenees is a large to giant breed dog, depending on their estimated full-grown size. They’re gentle, very loving, and affectionate towards their families. So, be prepared for lots of cuddles and snuggles with this giant pup. However, thanks to their large size, they require plenty of space to live comfortably. This dog would absolutely love a fenced backyard to play and roam around. 

How Big Is A Full Grown Great Pyrenees?

A Great Pyrenees full-grown size sits between 85 to 160 pounds, and stands at 25 to 32 inches tall at the shoulder. Usually, Great Pyrenees pups reach their full-grown size around the time they’re 2 years old. 

A different formula you could use is:

1. Growth = current weight / current age in weeks
2. Adult weight = Growth x 52 (number of weeks in one year)

So, for example, if your 12-week old pup weighs 18 pounds. You simply divide the current weight by their age in weeks and multiply the result with 52:

What Is The Average Size Of A Great Pyrenees?

Typically, male dogs tend to be bigger than females. The average size of a male Great Pyrenees dog is usually around 100 to 160 pounds. Males stand at 27 to 32 inches tall at the shoulder. In contrast, female Great Pyrenees pups usually weigh around 85 to 115 pounds, and stand at 25 to 29 inches tall at the shoulder. 

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In conclusion, the Great Pyrenees is a wonderful breed with many amazing qualities. Although big in size, the Great Pyrenees possess a very calm, mature attitude. They’re affectionate, loyal, and protective of their families. And they’re so fluffy and cuddly, which makes them even more adorable. 

We hope this article has provided you insights to know what to expect with a Great Pyrenees puppy.