How Big Do Fox Terriers Get? Fox Terrier's Size and Weight

How Big Do Fox Terriers Get? Fox Terrier’s Size and Weight

You might be someone who would like to have a dog, but when having a dog, you have to pay attention to lots of different details. The dog’s personality, size, maintenance, and many more impact your decision.

If you are someone living in an apartment, condo, or house with limited space, the dog’s size will be one of the biggest concerns you should deal with.

If that is the situation, you will likely opt to have a small dog, and for anyone who would like to have a fun little canine, Fox Terrier is an excellent choice.

So, How big do Fox Terriers get? Fox Terriers are generally identified as a small-sized dog breed. The average size (height and weight) of a healthy adult Fox Terrier can be around 10-20 pounds in weight and up to 10-16 inches tall. However, there are possibilities where these measures could slightly increase or decrease. Fox Terriers can be further categorized into Smooth Fox Terriers, Wire Fox Terriers, and Miniature or Toy Fox Terriers. Based on this categorization, their heights and weights will change. 

Genes are the predominant factor determining any dog’s size, including Fox Terriers’. Besides genes, gender is another factor that affects the overall growth of a dog.

Still, it is not just the internal factors that matter in the growth of a Fox Terrier; other external factors such as quality and nutritional food, physical activities, and health care, also make a significant impact. 

How big do fully grown Fox Terriers get?

Dogs come in different sizes; accordingly, we can group them as miniature, toy, small, medium, large, and giant dogs. In most cases, the Fox Terrier belongs to the small dog category.

However, there are instances where they belong to the toy or miniature category too. To be more precise, Smooth and Wire Fox Terriers are considered small dogs, whereas Miniature Fox Terriers are toy dogs. 

Depending on the category, their overall heights and weights do change, but if we observe things, generally, a healthy, fully grown Fox Terrier owns an approximate weight of 12-20 pounds and a height of 10-15 inches.

Fox Terrier is a breed that descends from a hunting background. This breed was developed to flush Foxes out of their hiding places.

To perform their tasks as hunting dogs, Fox Terriers were developed as a small dog breed. Over the years, specific changes happened in their physique; nonetheless, they were developed as small-made dogs. 

The average size of healthy Fox Terriers (Weight and Height)

It is hard to track the exact size of a Fox Terrier precisely; hence one cannot surely tell how big would a Fox Terrier get.

However, standardbred Fox Terriers are small made dogs, and their genes and gender primarily determine their average weight and height.

According to that, a purebred Fox Terrier can grow up to 20 pounds in weight and 16 inches in height. On average, they typically weigh around 10-20 pounds and stand up to 10-16 inches tall. 

The average size of Wire Fox Terrier, Smooth Fox Terrier, and Toy Fox Terrier 

As mentioned previously, there are different versions of Fox Terriers: Wire Fox Terrier, Smooth Fox Terrier, and Toy Fox Terrier.

The physical characteristics of these dogs create the base of this categorization, and accordingly, their size may change.

  • Wire Fox Terrier 

A male Wire Fox Terrier can have an average weight of 10-15 pounds and a height of 11-15 inches.

If it is a female Wire Fox Terrier, they are likely to weigh 9-12 pounds and stand tall up to 10-13 inches. 

  • Smooth Fox Terrier 

In most cases, Smooth Fox Terriers can be slightly bigger than Wire Fox Terriers. Male Smooth Fox Terriers usually grow up to 17-19 pounds and 13-15 inches.

Female Smooth Fox Terriers, on the other hand, typically have an average weight of 15-17 pounds and an average height of 12-14 inches. 

  • Toy Fox Terrier 

As the name implies, Toy Fox Terrier, sometimes known as Miniature Fox Terrier, tends to be the smallest of different versions of Fox Terriers.

The weight of a Toy Fox Terrier ranges from 4-10 pounds and height 8-11 inches. 

What helps a Fox Terrier’s growth and size?

What factors influence the growth and size of a Fox Terrier? Both internal and external factors equally contribute to the healthy and proper development of a Fox Terrier.

So let’s have a look at them.

  • Genes and bloodline

Genes are undoubtedly the most critical factor that helps the growth of a Fox Terrier. It has been scientifically explained how much of an impact genes make in determining any dog’s growth and size.

According to a study conducted by the National Human Genome Research Institute (NHGRI), the differences in the size of dogs are associated with minute genetic variation.

The genetic formation of Fox Terriers makes them generally small dogs. Furthermore, if the puppies descend from original bloodlines, they will likely grow better.

  • Nutrients

Nutrients are helpful to the growth of living creatures and no exception for dogs. While genes and bloodlines contribute internally to the growth of a Fox Terrier, nutrients become an important external factor that supports their growth.

Fox Terriers are active and energetic dogs; hence it is important to give them quality food to ensure that they meet their everyday dietary needs.

  • Physical activities 

Physical activities also make a considerable impact on the healthy growth of dogs. Fox Terriers are usually active dogs.

Still, they need adequate amounts of exercise to stay in shape. Exercises help them to release their excess energy and grow healthier. 

Tips for maintaining the growth of your Fox Terrier

In the previous section, we focused on some of the key factors that help the growth of a Fox Terrier.

It is evident that we do not have any control over the genes of your dog, but you can control the external factors that contribute to their growth.

Below you can find some pragmatic actions to follow to maintain the growth of your Fox Terrier. 

  • Provide them with well-balanced food 

Food is the primary source of energy and directly contributes to the functioning of the organs.

Therefore if your Fox Terrier does not get healthy and well-balanced food, it will impact all the components of the body, including organs, muscles, and bones.

Fox Terrier is not a dog breed that has complex dietary requirements. However, if you need the dog to grow healthier, you must pay attention to the quantity and quality of the food you give them.

Always keep in your mind that providing a vast amount of food will never help the better growth of your dog; instead, it will lead to obesity and make them sick.

A well-balanced diet of a Fox Terrier should contain proteins, fats, vitamins, and minerals. Quality dog food helps them to meet their basic nutritional needs.

To make their meals richer with nutrients, you can eventually add veggies, fruits, and raw meats.

You can add additional vitamins such as Omega3 as required. It is also essential to give them enough water regularly. 

  • Make them exercise regularly 

Fox Terrier is a breed that has intense energy levels. They typically need 30-45 minutes of daily vigorous exercise sessions.

Do not overdo the exercise sessions, but make sure you keep the sessions consistent. Regular physical activities help your Fox Terrier to have strong and healthier limbs.

It helps to grow their muscles healthier. Also, help reduce the risk of several physical and mental illnesses. So, it helps the overall growth of the dog. 

  • Follow a grooming routine

You might wonder how grooming affects the growth of your Fox Terrier. Paying good attention to your dog’s grooming contributes considerably to avoiding many potential health concerns that cause trouble for the dog’s development.

The grooming schedule of your Fox Terrier should consist of bathing, brushing, cleaning their teeth, and so forth. All put together, it contributes to the regular health of the dog. 

  • Pay attention to veterinary care 

Veterinary check-ups are essential for the health and growth of your pet Fox Terrier. The dog doesn’t necessarily have to indicate signs of sickness to take them to a vet.

You can do occasional veterinary check-ups to ensure the dog is in good health.

Moreover, if your dog is sick, you can spot it at the earliest stages by doing veterinary checkups, making it easy to address the issue. 

  • Keep the dog happy 

Happy dogs are usually healthy dogs, and healthy dogs grow better. Your Fox Terrier needs a positive and nurturing environment for its development.

Growing up in a house where the dog gets enough attention and care, the dog tends to grow happier and better.

If the dog is not satisfied in the home, it will severely impact their physical and mental health and growth. 


Fox Terriers are typically small dogs with an average weight of 10-20 pounds and a height of 10-16 inches. These measures could slightly differ depending on the different versions of Fox Terriers.

Nevertheless, a healthy full-grown Fox Terrier usually owns a height and a weight from the above-mentioned ranges.

Although their genetic formation primarily determines their growth as owners, you must also take relevant action to ensure that your dog grows better and healthier.

Thank you for reading this article! Stay tuned with Jack Russell Owner for more interesting posts.


  • George Brown

    George B. is the founder of the JRO Organization. He believes in creating a better world for domestic animals. He believes domestic animals are more vulnerable than other animals, especially dogs, since they have been used to depending on their owners for generations. So, he started JRO to share his ideas and insights while helping vulnerable dogs worldwide. George runs multiple projects on street dogs in developing countries, especially Sri Lanka.

Similar Posts