When Do Dogs Stop Growing? 7 Things to know

When Do Dogs Stop Growing?

If you’re wondering when dogs stop growing, there are a few things to keep in mind.

Most small to medium breeds stop growing somewhere between six and eight months, while large breeds can keep growing for much longer.

However, your pup’s age will have a large impact on how long your pup will stay this size. Fortunately, there are a few things you can do to help your pup maintain its size. Keep reading to learn more about the life of a growing dog!

The most common question about when dogs stop growing is whether your new pup will grow any further. While small dogs usually reach their full size in about a year, big dogs may continue to grow for two years.


A Mastiff-type dog may not stop growing altogether until three years old. Depending on breed, physical maturation may take place independently of skeletal growth. Large breeds, such as English Bulldogs, may take even longer to reach adulthood.

Dog’s diet

If your dog is suddenly not growing, you should take him to a veterinarian as soon as possible. He will ask you a few questions about your dog’s health and conduct a thorough examination. Be sure to discuss any changes in your dog’s diet, medications, and recent exposure to new things with the veterinarian to ensure that your pooch doesn’t have a medical condition.

If all else fails, a veterinarian can prescribe a drug that will correct the issue.

Several breeds of dog do not stop growing, including giant breeds like the bulldog, which continue to grow even after desexing. The same is true for medium-sized dogs. The average medium-sized dog will reach full size between twelve and fifteen months, although some breeds may take longer.

Large breed dogs

Larger dogs may continue to grow until they are two years old. For the most part, they will continue to gain muscle, but their bones will stop growing.

Large breed dogs take the longest to reach full size. While a small dog might reach full size at the age of three, it could take another two years or longer.

Large breed dogs have long growth plates, and may not reach full size until they’re two years old. Unlike humans, dogs’ growth plates are soft, so their full size may not be reached until they’re two years old.

Toy Poodle

In comparison, a Toy Poodle may only reach ten inches tall and weigh between six and ten pounds.

If your pup’s paws look large, they’re probably not fully grown. Puppies grow disproportionately their paws. Even the smallest breeds tend to stay small, so paw size may not be a reliable indicator of full size.

In addition, the paws of small dogs may be small at birth, but this method is not foolproof, and sometimes they will have uneven growth spurts.


While male and female Chihuahuas might both stop growing at six months, they don’t have the same growth rate.

Females Chihuahuas mature faster than males and reach their reproductive capabilities earlier. Males are generally larger and heavier than females of the same breed. They may also become obese before they reach their adult size.

However, this is not true for all breeds. If you notice that your dog has stopped growing at six months, it might be time to seek a new pet.

Toy breeds

Growth slows down after six months for most breeds. Toy breeds will reach full adult size in a couple of months, while medium and large breeds will take longer.

Giant breeds, on the other hand, may need a couple more months to reach their full size. A 6-month-old puppy should have all of their adult teeth. The puppy should also be sexually mature and have all of their adult teeth.

While the muscles of a dog can continue to grow throughout the dog’s life, the bones will stop growing. With proper nutrition and resistance training, a mature dog can “bulk up” for a while. Unlike human growth, bones do not increase in size in adulthood. This means that if your dog is a puppy, a better time to neuter him is before he reaches six months of age.

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