Any dog with the word ‘Great’ in the name naturally results in questions about their size. But how large does the Great Pyrenees really get and what factors can contribute to their full-grown size? I spent some time researching the breed standard and analyzing the data and will be sharing this with you here today.

So, how big do Great Pyrenees get? The average Great Pyrenees will stand between 25-32 inches in height and weigh between 85-160 pounds (38-72 kg) when fully grown. They generally take up to 2 years to reach their final size. Males are generally much heavier than females, although both are still considered an extra-large breed.

Whether you’re in Europe and know them as Pyrenean Mountain Dogs or are in North America and know them as Great Pyrenees, the breed is the same.

Either way, they are beautiful large dogs.

They were initially bred as working dogs, but they even worked their way up to become the official Royal Dog of France.

Today, the Great Pyrenees is a popular therapy and rescue breed, alongside being a loyal companion and family pet.

What could be surprising, is that they are considered giant, XX-Large breeds.

Upon first glance, they may not seem to be as large as they really are.

If you ask most people which breed is bigger between a Great Dane and a Great Pyrenees, most would probably incorrectly guess the Great Dane.

Let us now take a closer look at the size of the Great Pyrenees in further detail.

We will also be covering some of those factors that play a part in how big they ultimately get, and some considerations for owners regarding their size.

So, be sure to keep reading until the end to ensure you get all the information on this breed that you need!

How Big Is A Full Grown Great Pyrenees?

Great Pyrenees are considered to be giant, extra-large breeds. The typical and average size range and breed standard is between 25-32 inches in height and 85-160 pounds.

There isn’t a lot of difference in height between a fully grown female and male Great Pyrenees.

Like many breeds, the males are taller than the females, but only by an average of between 2 and 3 inches.

The female Great Pyrenees is generally between 25 and 29 inches when fully grown, while the males are between 27 and 32 when they are fully grown.

The big difference as you can see is in weight.

Males are considerably heavier than females, being bulkier and carrying more muscle mass than their female counterparts.

Naturally, they will be stronger. We will discuss this further in the next section.

At first sight, the Great Pyrenees doesn’t seem that tall, but then when you get closer to one and realize how far upon you, they come you see how big this breed really is.

Not too many dogs grow to be as big as the Great Pyrenees, yet this breed is often forgotten about when one speaks of giant breeds.

Most people think of breeds like the Saint Bernard and Alaskan Malamute when thinking of XX-Large breeds, though these breeds are smaller than the Great Pyrenees.

How Heavy Do Great Pyrenees Get?

Not all breeds have a gap of 75 pounds with the average range of weight between males and females.

The female Great Pyrenees seems like a lightweight compared to the males, weighing on average, between 85 and 115 pounds when they are fully grown.

The males are much heavier with a range of between 100 and 160 pounds when they are fully grown.

With such a big difference in weight, compared to such a difference in height, it probably isn’t too hard to know the different genders just by looking at the individual dog.

Due to their weight, the Great Pyrenees falls into the category of an XX-Large breed, with the likes of the Great Dane, Saint Bernard, and Alaskan Malamute.

The Great Pyrenees stands the same height as the Great Dane but actually weighs more.

Many people don’t think of these dogs as being that big.

While they may think that the Great Pyrenees as being a big dogs, they are generally thought to be closer in size to a Bernese Mountain Dog than a Great Dane.

Of course, just because these are the average measurements doesn’t mean that all Great Pyrenees dogs will be this size. Just like with any other breed there are always exceptions to the rule.

When Is A Great Pyrenees Fully Grown?

Like many larger breed dogs, the Great Pyrenees takes quite a bit of time to reach their full size. On average it will take a Great Pyrenees two years before they are fully grown.

The males may get to their full height around a year old, and usually weigh in at 100 pounds at that time, before adding another 40 to 60 pounds over his second year of life.

Most dog breeds reach their full height months before reaching their full size, so this isn’t out of the ordinary.

Oftentimes with larger breed puppies, you’ll notice that they go through several different growth spurts, where they will grow out and then up, and then out and then up.

Below we will take a look at the respective growth rates of both male and female Great Pyrenees as they age:

Growth Of A Male Great Pyrenees

The weight of a male Great Pyrenees at 3 months should be between 37 and 40 pounds.
At 6 months, they will likely weigh between 69 and 73 lbs (pounds).
At 1 year, a male Great Pyrenees should weigh between 102 and 109 lbs (pounds).

Age	Weight – Low Average (lbs)	Weight – High Average (lbs)
3 Months	37	40
4 Months	48	50
5 Months	59	63
6 Months	69	73
7 Months	77	81
8 Months	83	88
9 Months	88	92
10 Months	94	99
11 Months	99	103
12 Months	102	109
13 Months	103	110
14 Months	105	115
15 Months	107	119
16 Months	110	124

Growth Of A Female Great Pyrenees

The weight of a female Great Pyrenees at 3 months should be between 28 and 30 lbs (pounds).
At 6 months, they will likely weigh between 53 and 60 lbs (pounds).
At 1 year, a female Great Pyrenees should weigh between 75 and 78 lbs (pounds).

Age	Weight – Low Average (lbs)	Weight – High Average (lbs)
3 Months	28	30
4 Months	37	40
5 Months	44	51
6 Months	53	60
7 Months	59	63
8 Months	63	67
9 Months	68	70
10 Months	71	73
11 Months	73	76
12 Months	75	78
13 Months	78	82
14 Months	80	85
15 Months	81	89
16 Months	82	94

As you can see, a puppy this size can cause a lot of damage, whether intentionally or not.

Another thing to consider is mental maturity. This is when they start behaving like an adult dog. The Great Pyrenees mentally matures at about 2 years of age as well.

So, for about a year there is a 32 inch, 100 plus pound dog that is traipsing around.

So, if you’re going to own a Great Pyrenees then make sure you’re prepared to have an oversized puppy for quite a while.

The Great Pyrenees is a very intelligent dog, with a mind of its own, and a habit of figuring things out.

This, combined with their size, can be very problematic so it is strongly recommended that you get your Great Pyrenees socialized at a very early age.

In addition to socialization, training is extremely important for the breed or the