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At What Age Do Dogs Stop Growing?
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At What Age Do Dogs Stop Growing?

Rachel, Critter Culture Staff
Updated Jul 14, 2020

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While everyone can agree that puppies are the cutest things on earth, the answer to “when do dogs stop growing” is going to have a wide range of answers. Depending on the breed of your dog, how it’s growing, and the food its eating can all affect the puppy’s growth rate. Just like people, dogs come in all shapes and sizes so even within the typical scale for the breed you might find that there’s a lot of room for the puppy to, well, grow!

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1

When is a dog done growing?

puppy and mother Photo by Jametlene Reskp on Unsplash

One of the major deciding factors on the rate at which a dog will grow has to do with the size of the dog breed in general. Typically you’ll find that a smaller dog will reach full size in much more quickly than a larger dog. So, for example, if you have a Chihuahua, it could stop growing at around 9-10 months of age. However, a Great Dane might take between 18-24 months to real its final size.

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2

What about a dog’s maturity?

group of puppies Photo by Jametlene Reskp on Unsplash

Again as a general rule, smaller dogs will mature more quickly than a larger breed. You’ll find that their awareness of their surroundings and their grown-up sense of themselves and the world around them will come in much quicker if you’re talking about a Yorkie. This can make big dogs seem like they are puppies for longer, with all the joys and tribulations that can bring!

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3

Newborn puppies

newborn puppy Photo by Lydia Torrey on Unsplash

Puppies do develop at different speeds, but there are a few landmarks that are typical for every puppy to go through. From when they’re born until around three weeks of age, puppies will be vulnerable and should be kept by their mothers. Their eyes won’t open until they’re around two weeks of age, and even then they will have limited sight and be quite defenseless.

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4

Puppy development

puppy development Photo by Lydia Torrey on Unsplash

At this point, you’ll find that puppies are developing quickly. Their personalities are coming in as they interact with their littermates and what they see around them. Between three to six months your puppy will be entering their toddler phase, where they may chew on many things as their teeth come in, and they become more active, independent, and may challenge authority. From six to 12 months, your pup is a teenager - they’re growing into themselves a little awkwardly, and are at their most active and playful.

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5

Food, glorious food

puppy chewing stick Photo by Jordan Whitt on Unsplash

Unsurprisingly, the food that your dog is on is going to go some way to dictating the size that your dog is going to end up. Obviously, no matter how much you feed a small dog, it’s not going to grow into a giant, but you have to be just as mindful with not overfeeding a larger breed dog. Some studies have shown that if a larger breed puppy puts on too much weight too quickly, it can lead to issues like hip dysplasia and orthopedic issues later in life.

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6

Mind the joints

puppy in a field Photo by Jamie Street on Unsplash

Exercise is also a great contributor to the size and shape that your dog will grow into being. This means being careful that you are giving them the right amount of the right kind of exercise. For instance, puppies may be harmed by extensive, prolonged jogs that put too much stress on the joints, and these could create issues later in life.

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7

Tailor your exercise routine

puppy playing Photo by Daniël Maas on Unsplash

A little bit like when you have a trainer at the gym, it’s important to tailor your growing puppy’s exercise so that they get enough, but also don’t go through too much impact. If you’re uncertain what’s good for your dog, check in with your veterinarian so that you can keep them on low-impact exercise while their bones and joints are still growing.

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8

Is my puppy done growing?

corgi puppies Photo by anya potsiadlo on Unsplash

One of the secrets to working out if your dog is done growing is to feel their ribs. A dog which is still growing will have little ‘knobs’ on their ribs from where the bones have not fully fused. It’s also worth checking with the breeder, if you have a purebred puppy, or your veterinarian, to check on the developmental stages. You can do this when checking in with boosters and vaccinations, and your vet can advise you the best steps to keep your little one healthy and growing well.

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9

How big will my purebred puppy be?

purebread puppy Photo by J-S Romeo on Unsplash

There are a few pointers you can look at to find out how big your puppy will get. If you have a purebred pup, you’ll find that looking at the sire and the dam is a great way to get a rough idea of how large your dog might get. Also, check with the breeder to get a feel of what might be typical - remember that depending on the breed, there can be a huge variety in both size, weight, and shape of a dog, while it still fits the “breed standard.”

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10

How big will a mixed breed puppy get?

mutt puppy Photo by Popa Teodora on Unsplash

Unlike a purebred, it’s much harder to tell the size your mixed breed puppy will get, as it depends on a huge variety of factors. While you can guesstimate the size, it’s never a guarantee that you’ll be 100 percent right. One way around this is to do a DNA test on your puppy - it won’t be able to guarantee the size of your dog, but it will give you an indicator of what dog breeds your puppy is a mix of, which can help you know what size to anticipate!

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