Golden Mountain Doodles: Growth Phases + Chart | See How Big They Get

If you're raising a Golden Mountain Doodle or thinking about adding one to your family, you're probably wondering how big your pup will get—and how fast.

Golden Mountain Doodles are a unique and lovable mix of Golden Retriever, Bernese Mountain Dog, and Poodle, which means their growth journey can be a little different than other doodle breeds.

In this guide, we’ll walk you through the key growth phases your Golden Mountain Doodle will experience, from those first few sleepy weeks all the way to full adulthood. We’ll also include a helpful growth chart so you can get a rough idea of what to expect.

Average Golden Mountain Doodle Growth Chart

Keep in mind that not all dogs grow at the same rate—size depends heavily on whether your doodle is a mini, medium, or standard. That said, here’s a general idea of what you might expect in terms of weight as your pup grows:

Weight + Age:

Height + Age:

Newborn to 2 Weeks: The Neonatal Stage

In this earliest stage of life, Golden Mountain Doodle puppies are completely dependent on their mother. Their eyes and ears are closed, they sleep nearly all day, and they rely entirely on mom for warmth and nutrition.

Breeders monitor puppies closely during this phase, making sure each one is nursing well and gaining weight. Most pups will double their birth weight by the end of week two.

2 to 4 Weeks: Waking Up to the World

This is when puppies start to experience the world around them. Their eyes and ears open, and they begin to stand, wobble, and interact with littermates. They’re still a long way from being independent, but their personalities begin to peek through.

This is a transitional stage, and while they’re still mostly cared for by the breeder, you may start seeing glimpses of the dog they’ll become.

4 to 8 Weeks: The Socialization Sweet Spot

Between four and eight weeks, puppies are in the heart of their critical socialization window.

They start to play, learn bite inhibition, and explore their environment. They're weaned off their mother's milk and begin eating solid food.

Ethical breeders use this time to expose puppies to different sights, sounds, and surfaces to build confidence. This phase lays the foundation for how your pup will interact with the world as they grow.

8 to 12 Weeks: Welcome Home!

Most Golden Mountain Doodles go to their forever homes around 8 weeks of age. This period is all about adjustment—to a new family, home, routine, and set of rules.

Puppies are teething, learning basic commands, and (hopefully) getting plenty of social experiences with people and other dogs.

Training and patience are key here. Your puppy is soaking up everything like a sponge!

3 to 6 Months: Rapid Growth and Play

This is the phase where your pup may start to look a little awkward—long legs, big paws, and a whole lot of energy. Your Golden Mountain Doodle is growing quickly, often gaining several pounds a week depending on their size class (mini, medium, or standard).

You might notice a short fear period during this time—it's completely normal. Keep training sessions short, consistent, and positive.

6 to 12 Months: The Teenage Stage

Ah, adolescence. Your doodle is no longer a tiny pup, but not quite a calm adult. You might see testing of boundaries, selective hearing, and bursts of wild energy.

Physically, they’re nearing their adult size but still filling out. Their coat may start to fluff up more, and grooming becomes especially important during this time to prevent matting.

They may also go through another fear period, so keep reinforcing good behavior with lots of positive exposure and rewards.

12 to 18 Months: Young Adult Life

By now, your Golden Mountain Doodle is likely looking close to their adult size, especially if they’re a standard variety. Muscles continue to develop, and they begin to settle emotionally (thankfully!).

You may notice their coat change slightly in texture or volume. This is a good time to establish a solid grooming routine and revisit training if things have gotten a little sloppy.

18 to 24 Months: Fully Grown and Mature Golden Mountain Doodles

Most Golden Mountain Doodles reach full physical maturity between 18 and 24 months. While they may still have bursts of puppy playfulness, they usually calm down significantly compared to their earlier months.

Their weight and height should level off, and their adult personality is firmly in place. At this stage, your job is to maintain good habits, provide enrichment, and enjoy life with your fully grown best friend.

From a Small Puppy to a Full Grown Friend

Watching your Golden Mountain Doodle grow is one of the most rewarding parts of dog ownership. From tiny, sleepy fluffball to full-sized, loyal companion, these dogs go through a lot in their first two years!

While growth charts and timelines are helpful, remember: every doodle is unique. Focus less on the numbers and more on making sure your pup is healthy, happy, and loved every step of the way.

Got a Golden Mountain Doodle at home? Share your pup’s growth milestones in the comments—we’d love to hear your story!

Jenna and the JLDD Team