When Do Boxer Dogs Stop Growing: A Guide to Their Development

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Posted Oct 29, 2024

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Boxer dogs typically reach their full height between 6 to 8 months of age.

During this period, they can grow up to 1-2 inches per month. Boxers usually stop growing in height by the time they are 9-12 months old.

Their weight, however, continues to increase until they are about 18 months old, with males weighing between 65-80 pounds on average.

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Factors Affecting Dog Growth

Genetics are the number one factor that affect growth rate, and it's really guesswork, based on breed and the size of the parents. A study found that neutering before one year of age can affect growth in large breed dogs, potentially by centimeters.

Growth hormones also come into play, influencing the size that dogs will grow to. Purebred dogs, like those registered with the AKC, can offer some predictability in size based on their breed and family tree.

Your veterinarian will consider these factors, among others, when estimating your dog's adult size.

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Factors Affecting Body Size

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Genetics play a huge role in determining a dog's growth rate, with breed and the size of their parents being significant factors.

Your veterinarian will consider these factors when estimating your dog's adult size, and it's really just guesswork.

Growth hormones also affect a dog's size, with different breeds responding differently to these hormones.

Neutering before one year of age can impact a large breed dog's growth, potentially affecting their size by centimeters.

In small dogs, neutering has a minimal impact on growth, affecting it by only a few millimeters.

Puppies continue to grow in height and size until their bones are fully developed, which can take anywhere from 6 to 24 months.

The long bones in a puppy's legs grow from two distinct places called growth plates, which are flexible and soft during puppyhood.

As a puppy grows, the new tissue developed in their growth plates hardens into bone, eventually stopping growth when the growth plates close.

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Even after their bones are fully developed, your puppy will continue to develop fat and muscle, just like human adults do.

Purebred dogs are known for their predictability, including their size, coat, and temperament, making it easier to estimate their adult size based on their breed.

However, there can be variances within breeds and litters, so it's not a hard and fast rule.

Medium Breed Dogs

Medium breed dogs typically weigh between 25-50 pounds when fully grown. Beagles, Basset Hounds, and Miniature Schnauzers are examples of medium breeds.

Dr. Walker expects medium size dogs to double their size between 8-12 weeks.

Medium breeds reach full growth between 12-15 months. Sometimes, they may grow a little after that.

Puppy Growth

Puppy growth is a fascinating topic, and understanding it can help you provide the best care for your Boxer puppy. Puppies continue to grow in height and size while their bones are still developing, which takes anywhere from 6 to 24 months.

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Their skeletal growth is what determines how tall they will become as adults. The growth plates in a puppy's legs are somewhat flexible and soft during puppyhood when new tissue is being formed.

A Boxer puppy's weight doubles in the first two weeks of life, and then the growth rate slows down. By 3-12 weeks of age, they increase their weight by approximately 300%.

Boxer puppies have different growth stages, including the puppy fat stage, skinnier and lengthier stage, and redistributing their weight stage. These stages are normal and expected as they develop.

Here's a rough estimate of a Boxer puppy's weight and height at different ages:

Understanding Growth Stages

Puppies continue to grow in height and size until their bones are fully developed, which takes anywhere from 6 to 24 months.

All puppies, including Boxers, go through 3 growth stages until they reach adulthood. These stages are characterized by how fast the puppy grows during the period and how they appear in posture and body condition.

Credit: youtube.com, The Growing Stages of a Boxer (2 months-2 years) BROCK THE BOXER DOG

Boxer puppies increase their weight by approximately 300% between 3 and 12 weeks of age.

The growth rate slows down after the second week, but the puppies will continue to develop fat and muscle, just as human adults do.

Boxers undergo several different stages during their lives, including a puppy fat stage, a skinnier and lengthier stage, and a redistributing their weight stage.

A healthy adult Boxer will have a noticeable tuck in their waist and a muscular build.

Here's a rough estimate of how many inches (in) your Boxer should grow between 8 weeks and 24 months of age:

Keep in mind that this is an estimate, and if your Boxer puppy is slightly above or below these numbers, there shouldn't be anything to worry about.

Feeding and Care

Feeding your growing Boxer puppy is crucial for their development and future health. Foods that meet the nutritional guidelines set up by the Association of American Feed Control Officials (AAFCO) and are specifically designed for all life stages will provide your developing pup all the nutrition they need.

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You'll want to choose a food that's labeled as "all life stages" to ensure your puppy gets the right nutrients from birth to adulthood. These foods are a safe bet because they meet the needs of both growing and adult animals.

To avoid obesity and future orthopedic issues, make sure to follow the guidelines on the food and keep an eye on your puppy's weight. A fit, leaner puppy is considered preferable to a chubby older puppy.

Spay or Neutering

Spaying or neutering your dog is a crucial decision that affects their health and well-being. It's essential to do it at the right age to avoid potential problems.

Spaying or neutering a dog doesn't stunt its growth, but fixing your Boxer too early can slow the closure of their growth plates, allowing them to grow taller than nature intended. This is especially true for larger breeds like Boxers.

Your veterinarian can recommend the best age to spay or neuter your Boxer. They can help you strike the right balance between preventing excessive growth and avoiding the risks associated with waiting too long.

Spaying or neutering too early can have long-term ramifications on your dog's joint and bone health. It's a decision that requires careful consideration and consultation with a veterinarian.

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Feeding a Puppy

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Feeding a puppy requires careful consideration to ensure they receive the necessary nutrients for growth and development. Foods that meet the nutritional guidelines set up by the Association of American Feed Control Officials (AAFCO) and are specifically designed for all life stages will provide your developing pup all the nutrition they need.

These foods are a great option because they don't require a transition onto an adult-specific food when pups are fully grown. They meet the needs of both growing and adult animals, making them a convenient choice for many pet owners.

You'll also find puppy-specific foods that ensure your pooch gets all the nutrients she needs, but you'll only want to feed those until adulthood – around 11 to 14 months of age. This is because these foods are designed to support rapid growth and development during the puppy stage.

Most importantly, always follow the guidelines on the food when feeding your puppy so the pooch doesn't become overweight. Obesity in puppies can lead to a predisposition of future orthopedic issues later in life, such as hip dysplasia.

Frequently Asked Questions

How big do Boxers get full grown?

Male Boxers typically reach 23-25 inches in height at the shoulder, while females are 3-4 inches shorter. Full-grown Boxers can take up to 18-24 months to reach their maximum height and bulk.

How long does it take a Boxer to reach full size?

Boxers typically reach full size between 18 to 24 months of age. They usually stop growing during this period, allowing them to reach their adult height and weight.

At what age is a Boxer no longer a puppy?

A Boxer is no longer considered a puppy at 2 years old, marking the end of its puppy stage and the beginning of adulthood. At this age, your Boxer will have reached its adult weight and height.

Wallace Adams

Lead Writer

Wallace Adams is a seasoned writer with a passion for sharing knowledge with others. With a keen interest in the world of dogs, he has established himself as a go-to expert on the Chinook breed. His articles on Chinook breeders and information have been widely read and appreciated by dog enthusiasts and owners alike.