What Age Do Dogs Stop Growing?


It is a common misconception that dogs stop growing after the age of one. The truth is that all breeds of dogs reach maturity at different ages and will keep growing and changing until anywhere between the age of 1-5. Size and weight are the two most important factors when it comes to determining a dog’s growth rate, but other factors like breed, diet, activity level, and genetics all play a role in the growth process.

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The age at which a dog stops growing varies, depending on the breed. While small dogs, including Chihuahuas and Terriers, typically stop growing around the age of nine to twelve months, larger breeds like German Shepherds may keep growing for up to two years. However, even for large breeds, a majority of their physical development will have occurred by the time they are eighteen months old.

When Do Smaller Puppy Breeds Finish Growing?

Smaller breeds typically finish growing between 7 to 12 months but may take longer to fully mature physically.

When Do Larger Puppy Breeds Finish Growing?

Most large breed puppies take about 18 months to two years to finish growing.

When Do Purebred Puppies Finish Growing?

Purebred puppies usually finish growing at the end of their first year of life, though some larger breeds may take up to two years to reach their full size.

How Do I Feed A Growing Puppy?

When feeding a growing puppy, it’s important to use puppy food specifically formulated for pups that are still growing. This will ensure that your pup gets all the essential vitamins, minerals, and nutrients they need for proper growth. Make sure to check the label for age recommendations and feed your puppy according to the label’s instructions. Also be sure to provide plenty of fresh, clean water throughout the day. Puppies should also be fed on a regular schedule, over multiple meals, to avoid overfeeding.

How Do I Exercise Growing Puppies Safely?

  • Start with low-impact, slow exercises like walking. When a puppy is 4 months old, start him on casual, 10-minute walks. Gradually increase the length and intensity of these walks as the puppy grows.
  • Incorporate training into your daily routine. Daily basic training such as sit, stay, come, and down can help your puppy to learn how to pay attention and stay focused while developing proper balance and timing.
  • Allow time for play. Puppies need time to play and explore and you should encourage active play between the puppy and yourself or another pup as often as possible.
  • Incorporate swimming. Swimming is an ideal exercise for puppies. It is low impact and helps build their muscles while they enjoy it. Make sure to use a shallow area that is safe to reduce the risk of drowning and overexertion.
  • Treats and rewards. Keep treats handy during your walks or training sessions so that you can reward your pup for good behavior and keep him happy and motivated.

How Do Puppies Grow, Anyway?

Puppies grow at different rates, depending on the breed and size. Smaller breeds tend to mature sooner than larger ones. Generally, a pup is considered to be an adult at the age of one, although larger breeds may not be fully grown until they are two or even three years old. All puppies go through certain stages of physical development as they grow. The newborn puppy is blind, deaf, and virtually helpless, depending on its mother to provide warmth, nourishment, and protection. As the puppy grows, it will become more alert and able to explore its environment. By four to six weeks of age, a puppy should have developed some coordination and can usually walk. Its eyes and ears will be open and it will start to bark. Weaning begins at around four weeks and is typically completed by the sixth week. Between eight and ten weeks, a puppy should have developed most of its basic behavior patterns and will start to explore and bark more energetically. Puppies should receive vaccinations by the time they are 12-16 weeks, depending on the type of vaccine. During this time, puppies will also start to lose some of their baby teeth and their adult teeth will start to emerge. Eventually, they will be able to eat hard kibble and chew on bones. After six months or so, a puppy’s long-term growth rate begins to slow, and between eighteen months and two years of age, it is nearly done growing.

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Signs of growth in puppies can include physical signs such as increasing size, a growing coat of fur, and visible changes in joint mobility. Behavioral signs can also include increasing energy levels, increased playfulness, as well as being more curious and exploratory. Additionally, puppies may start to show more confidence, become increasingly brave, and demonstrate a greater ability to learn.

Size And Breed-Related Puppy Growth Factors

  • Genetics: Genetics is the most important component when it comes to puppy growth. The combination of genes from both the mother and the father has a huge effect on a puppy’s size and rate of growth.
  • Nutrition: High-quality, nutrient-dense puppy food is essential for healthy puppy growth. It should be balanced in the right proportions of vitamins, minerals, and proteins to give puppies the energy and nutrients they need in their growing stages.
  • Exercise: Regular exercise is important to help puppies develop muscle strength and increase their bone density.
  • Age: Puppies grow at different rates depending on their age, size, and breed. Smaller breeds tend to reach their full adult size by the age of 9 months, while larger breeds often take up to two years to fully grow.
  • Breed: Different breeds will have different growth rates and end up at different adult sizes. For example, a Bernese Mountain Dog can weigh up to 110 pounds while a Chihuahua will usually stay in the 5-pound range. Knowing the estimated adult weight of a certain breed can help plan for the necessary nutrition and exercise throughout the puppy’s growth.

How Does Spaying Or Neutering Affect Puppy Growth Rate?

Spaying or neutering a puppy will affect its growth rate in a few different ways. By removing the sex hormones, it’s believed that a puppy’s growth will be slower and steadier, resulting in a more even development of the skeletal structure. Additionally, spayed or neutered puppies are less likely to be affected by certain types of health problems, such as certain types of cancers and urinary infections. Lastly, neutered dogs tend to be calmer and less likely to exhibit aggressive behaviors, which could have a bearing on growth rate as well.

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What Age Do French Bulldog Puppies Stop Growing?

French Bulldog puppies typically stop growing between 8 and 12 months.

When Is A Dog Not A Puppy Anymore?

A dog is not considered a puppy once it has reached puberty, usually between six months and two years, depending on the breed.

Average Ages When Dogs Reach Adult Size

The average age a dog reaches full maturity and adult size can vary depending on the size and breed. Smaller breeds generally reach mature size in 1 – 2 years, while larger breeds may take 2 or more years. Giant breeds may take 3 or more years to reach full maturity.

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  1. Nutrition: Be sure to provide your pup with a premium, age-appropriate diet to ensure proper growth and development.
  2. Exercise: Exercise will help your pup maintain a healthy weight, build strong bones and muscles, and improve joints.
  3. Veterinary Care: Regular vet check-ups are essential to make sure your pet is in optimal health, and any growth-related concerns can be addressed promptly.
  4. Vaccinations: Establish an immunization schedule with your vet and always stay up to date on necessary vaccines.
  5. Spaying and Neutering: Depending on the age of your pet, it may be appropriate to consider spaying or neutering your pup to prevent potential health and behavioral issues.
  6. Grooming: Regular grooming sessions will help keep your dog’s coat and skin healthy, and prevent any irritation that may occur as he grows.
  7. Training: Proper training and behavioral guidance should start as early as possible. Not only will this benefit your pet, but it will also result in a better relationship between you and your pup.
  8. Mental Stimulation: Mental stimulation is just as important for growing pups as physical development. Find ways to provide your pup with puzzles and other forms of interactive play to keep his mind active.

Factors That Determine When Your Dog Stops Growing

  • Breed: Genetic makeup plays a large role in determining the size and growth rate of a dog—large dog breeds tend to take longer to reach full maturity than smaller breeds.
  • Diet: Proper nutrition is essential for healthy development. Puppies need a balanced diet of essential fatty acids, proteins, carbohydrates, vitamins, and minerals.
  • Exercise: When puppies are not given enough exercise, they may reach their full height but have a higher body weight than expected.
  • Physiological age: Dogs grow at different rates from one another, even if of the same breed and age.
  • Spaying or neutering: Hormones are released naturally during the animal’s puberty, but when the animal is spayed or neutered, healthy growth may be inhibited. Therefore, it’s important to wait until the pet is at least 9 months old before spaying or neutering.

At What Age Do American Eskimo Dogs Stop Growing?

American Eskimo Dogs stop growing around 18 to 24 months of age.

What Age Does A French Bulldog Stop Growing?

French Bulldogs generally reach full adult size between 9 to 12 months. They can continue to fill out up until 18 months.

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Mixed breed puppies typically reach their full physical maturity anywhere between 12-18 months of age, depending on the size of the breed they are mixed with. While puppies can still continue to put on weight and develop muscle mass up to 3 years of age, they will usually reach their full height by 18 months old.

When Does A Large Dog Stop Growing?

Typically, large dogs reach their full adult size by 1-2 years of age but will continue to grow until two and a half to three years of age.

When Do Dogs Stop Growing In Height?

Most dogs stop growing in height once they reach adulthood, usually between 12 and 18 months of age. Some breeds may take longer to reach their full adult height while others may be finished growing at a younger age.

When Is A Female Dog Fully Grown?

Most female dogs reach adulthood between 12 and 18 months of age, however, large breed dogs mature slower and may take up to 2 or 3 years to reach full size.

When Are Dogs Fully Grown?

The age at which a dog is fully grown will vary depending on the breed, smaller breeds typically reach their full size earlier than larger breeds. Most dogs are considered fully grown by one to two years of age, though giant breeds, such as Great Danes, may not reach their full size until three to five years of age.


Q. Is a 2-year-old dog still a puppy?

A. Yes, a 2-year-old dog is still considered a puppy. Depending on the breed, puppies can continue to grow and develop until they are anywhere between 1 and 4 years old.

Q. Can you tell how big a puppy will get?

A. No, it is not possible to accurately predict the adult size of a puppy. This is because many things can impact a puppy’s growth rate, such as nutrition, environment, genetics, and overall health. That said, an educated estimate of a pup’s eventual size can be made based on information about the puppy’s parents and its breed.

Q. Can a dog grow at 3 years old?

A. No, a dog’s growth plate starts to close at around 1.5 years old, so a dog will typically be at its full adult size by the age of 3. After 3 years old, the dog will not grow any taller, but it may gain muscle or a bit of weight.

Q. At what age do dogs stop growing in the wild?

A. In the wild, dogs reach full maturity between the ages of 1-2 years and stop growing during this time.


In conclusion, there is no definitive answer for when dogs stop growing. The age that a dog stops growing can depend on a number of factors such as breed, size, and diet. Most dogs stop growing between the ages of one and two years old, but some larger breeds may continue to grow until they are three or four years old. Ultimately, each dog’s growth will be determined by its environment and overall health.


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