Border Collie standing in a field.

How Big Does a Border Collie Get?

Are you considering getting a Border Collie as your next furry companion? If so, it’s essential to learn about their average size and factors that can affect their growth.

Border Collies are medium-sized dogs that are known for their intellect and agility.

However, there is no exact size for this breed as it can vary depending on several factors such as genetics, nutrition, and exercise. In this article, we’ll dive into everything you need to know about an average Border Collie’s size and factors that can impact their growth- so let’s get started!

Puppy SizeAdult SizeWeight Range
Small Border CollieMedium Border Collie30-40 lbs.
Toy Border CollieSmall Border Collie20-30 lbs.
Large Border Collie40-55 lbs.

What is a Border Collie?

Physical Characteristics

Border Collies are a medium-sized breed that typically reaches a height of 18-22 inches at the shoulder and weighs between 30-45 pounds. They are known for their athletic build, agile bodies, and long, lean muscles.

The breed has a double coat, with a soft undercoat and a coarser outer layer.

Border Collies come in a variety of colors including black, white, blue, brown, and red, as well as different patterns such as merle, tricolor, and bicolor. Their distinctive eyes are oval-shaped and can be brown, blue, or one of each which is known as “wall-eyed.” Their ears are also distinctive, being medium-sized, and set high and wide apart on the head.

These physical characteristics allow them to excel in their original role as herding dogs and in other energetic activities such as agility and frisbee.

Overall, Border Collies have a stunning appearance with their unique coat colors, striking eyes, and distinct ears. Their athletic build and agility allow them to excel at various activities which make them well-loved pets among active families.


Border Collies are highly regarded for their intelligence, agility, and energy. They are incredibly active and love to play and work.

These dogs have a friendly and affectionate temperament and enjoy spending time with their owners.

They are known to be loyal, obedient, and eager to please. Border Collies are also highly trainable and are commonly used as working dogs.

They exhibit a natural herding instinct and can be easily trained for good behavior with early socialization and obedience training.

However, it’s important to note that Border Collies require plenty of exercise and mental stimulation to keep them happy and healthy. A bored or understimulated Border Collie may develop destructive behavior and excessive barking.

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Overall, if you’re considering getting a Border Collie as a pet, it’s important to understand their temperament and provide them with the appropriate level of care and attention.

How big does a Border Collie get?

Average Size

A full-grown Border Collie typically weighs between 30 to 55 pounds and stands around 18 to 22 inches tall at the shoulder. Females tend to be slightly smaller than males, but this varies from dog to dog.

The average size of a Border Collie can depend on genetics, as well as the dog’s diet and exercise routine.

Dogs that are not given enough exercise or have a poor diet are likely to be smaller than those who are. However, it’s essential to ensure that your Border Collie is not overweight as this can cause health issues later on.

Overall, Border Collies are medium-sized dogs that are well-proportioned and perfectly suited for their herding abilities.

So, if you’re thinking of getting a Border Collie, keep their average size in mind when considering their needs for exercise and space.

Factors that affect the size of a Border Collie

There are different factors that affect the size of a Border Collie. Genetics play a vital role, which means that the dog’s parents’ size can influence its ultimate size.

Gender is another factor, as males tend to be larger than females.

Nutrition and lifestyle is also a critical aspect that can impact the size of a Border Collie. Providing a healthy diet with the necessary nutrients can allow the dog to grow at a steady rate and reach its full potential size.

Similarly, regular exercise and physical activity can prevent obesity, which can lead to health complications and stunted growth.

Finally, the age at which the dog is spayed or neutered can affect its size. Early spaying or neutering can result in the dog being smaller than it would have been if left unaltered.

Therefore, it’s essential to consider the timing of the procedure, especially if size is a significant concern.

There are various factors to consider when thinking about how big a Border Collie can get. Genetics, gender, nutrition, lifestyle, and timing of the spay/neuter procedure all play a determining role.

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By providing proper nutrition, exercise, and managing the timing of spaying or neutering, you can help ensure your Border Collie reaches its full potential size.

Full-grown Border Collie standing in a field
A majestic Border Collie standing tall, showcasing its impressive size.

How to ensure proper growth and development of your Border Collie

Diet and Nutrition

When it comes to ensuring the proper growth and development of your Border Collie, diet and nutrition are vital factors that you should pay attention to. Feeding your dog with a balanced, nutritious diet will not only keep them healthy, but it can also help prevent most health problems.

Here are some essential tips to keep your Border Collie nourished and healthy:

  • Choose the Right Food: Always choose high-quality dog food that provides all the necessary nutrients your Border Collie needs. Look for brands that use meat as the main ingredient, and avoid fillers such as corn and soy.
  • Portion Control: Overfeeding your Border Collie can cause obesity which can have adverse effects on their health. Feed them according to their size, age, and overall activity level.
  • Avoid Table Scraps: Feeding your Border Collie with table scraps is not a good idea, as it can cause obesity, digestive problems, and even pancreatitis. Stick with their regular diet.
  • Fresh Water: Always provide your Border Collie with fresh, clean water to keep them hydrated and prevent dehydration.

By following these diet and nutrition tips, you can ensure that your Border Collie gets the proper fuel for growth and development. A healthy and well-fed dog is a happy dog, and this will pay off in the long run with a healthy and happy pup who will be a long-term companion for you and your family.

Border Collie standing on grass field looking towards the camera
This Border Collie is a strong and sturdy breed that can grow to be quite large!

Exercise and Physical Activity

To ensure proper growth and development of your Border Collie, exercise and physical activity play an essential role. These dogs are highly energetic and require lots of exercises to stay fit and healthy.

Exercise not only helps in keeping them physically fit but also mentally stimulated, avoiding boredom, and destructive behavior.

You must provide them with ample opportunities for physical activities like running, playing fetch, or going for long walks. Experts recommend that you should walk your Border Collie for at least 30 minutes to an hour every day.

You can increase the intensity and duration of the exercise gradually as they build up their stamina.

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It’s essential to monitor them during the activities to ensure that they don’t over-exert themselves. In addition to regular exercises, you can also engage them in fun training activities that will keep them mentally stimulated.

These can include games like obstacle courses, hide-and-seek, or even tricks.

Overall, providing your Border Collie with regular exercises and physical activities is crucial for their overall growth and development. It’s essential to monitor their health and adjust the activities to suit their needs.

By doing so, you can ensure that your furry friend stays happy, healthy, and full of energy.

Regular Visits to the Vet

Regular visits to the vet are crucial for the overall health and well-being of your Border Collie. It is recommended to bring your pup to the vet for a check-up at least once a year, even if they appear to be healthy.

During these visits, the vet will perform a physical exam, check for any signs of illness, and update any vaccinations that your Border Collie may need.

In addition, regular visits to the vet can help identify potential health problems early on, giving your pup the best chance for treatment and recovery. This is especially important as Border Collies are prone to certain health issues, such as hip dysplasia and epilepsy.

Aside from the yearly check-ups, you should also take your Border Collie to the vet if you notice any unusual behavior, changes in appetite or bathroom habits, or if they appear to be in pain or discomfort.

Overall, regular visits to the vet are an essential part of ensuring the proper growth and development of your Border Collie, and can help keep them healthy and happy for years to come.


The size of a Border Collie can vary depending on various factors. While they are generally considered medium-sized dogs, genetics, diet, exercise, and health all play a role in determining their final size.

As pet parents, it’s important to ensure that our Border Collies receive the proper nutrition, exercise, and veterinary care to support their growth and development.

Remember, a happy and healthy Border Collie makes for a loyal and loving companion. If you’re considering adopting or already have a Border Collie, do your research and consult with a veterinarian to ensure that your furry friend is on the right path to reach their full potential.

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