All Blue Boston Terrier Details


All Blue Boston Terrier Details

Last Updated on March 8, 2024 by Denise Leo. Post first published on July 15, 2021.

A little lively companion, known for the distinctive markings on its coat that make him look like wearing a tuxedo, the Boston Terrier is the Gentleman of American dogs.

According to American Kennel Club (AKC), the breed comes in black and white, black brindle and white, brindle and white, seal and white and seal brindle and white coats. However, AKC does not register a blue Boston Terrier.

Gentle in behavior, affectionate in companionship, kind to all the members of its human family and loyal to its owner – Boston Terrier is impeccable in its manners.

This article is about blue Boston Terriers and other lesser known colors found in this breed such as Lilac Boston Terrier, Blue and White Boston Terrier and Merle Boston Terrier.

What is a Blue Boston Terrier?

The blue Boston Terrier is the result of a dilute gene affecting a traditional black Boston terrier. The outcome is a Blue Boston with a blue, silver or grey appearance instead of the usual black Boston Terrier.

Blue Boston Terrier Details

All the Boston Terriers have originated from one dog named Judge that came from Liverpool, England. It was owned by a Boston man named Hooper and the dog has become famous with an alias Hooper’s Judge.

Hooper’s Judge was bred to a female dog named Gyp and their offspring is the all famous Boston Terrier. All the purebred Bostons can trace their roots to them.

Unfortunately, an all Blue Boston Terrier isn’t a purebred dog. The blue color is the result of poor breeding practices.

The blue color occurred because of the mutation in the chromosome pool. Hence, instead of having a natural color, the mutated dog is blue, silver or grey in color.

All Blue Boston Terrier Details
All Blue Boston Terrier Details

American Kennel Club Specification of Colors in Boston Terriers

American Kennel Club (AKC) believes in the ideal representation of every breed and registers only those dogs that display a certain specific and peculiar criteria related to colors. A purebred Boston Terrier always has a coat of white mixed with any other color. The other color usually is black or seal. However, in sunlight the seal color also appears black.

The most frequent occurrence of Boston Terriers is in black and white. This black and white Terrier appears to be wearing a tuxedo and it has helped the Boston earn the nickname of American Gentleman. The American Gentleman usually comes with a splash of white on the chest, a white muzzle and a white blaze between the eyes.

AKC also recognizes brindle and white, and seal and white to be the colors of purebred Boston Terriers. However, it does not recognize other colors such as solid black, tan and black and liver (red) and mouse (blue). Even an all white coat is not recognized to be purebred by AKC.

The case of the blue Boston Terrier is peculiar. It descends from a line of dogs that can be traced back to Hooper’s Judge and Gyp. However, there has been sufficient mutation making its coat blue in color.

It is not recognized by the AKC. However, it is a Boston Terrier by all counts and though it may not be purebred, many dog loving folks happily own a Blue Boston Terrier.

Blue Boston Terrier Traits and Characteristics

Weight and Size

Blue Bostons come in three weight classes.

  • Under 15 pounds
  • Between 15 to 19 pounds
  • Between 20 to 25 pounds

They can grow from 12 to 17 inches high. The height of the female terrier is smaller than the male terrier. The life expectancy of the Boston Terrier is between 13 to 15 years.

Physical Appearance

The blue Boston is a medium sized non-sporting dog. It usually has a blaze between the eyes with a muzzle that adds to its beauty. With eyes brown in color and nose black,  the blue Boston Terrier has erect ears and a short tail. Its compact size makes it a perfect fit for small apartments.

Personality and Temperament

A Blue Boston Terrier is known for its lively and playful nature. It does not like to be left alone for it always prefers company. This trait makes it the best family dog. Not only is it friendly with adults, this dog is very kind to children also. Even it tolerates the presence of other dogs.

With shedding levels below minimum, fortnightly coat grooming requirements and drooling close to zero, the blue Boston Terrier is one of the cleanest breeds among many.

The blue Boston Terrier wants non-stop fun. It wants to stay with family and wants to actively participate in the chores. Another desirable characteristic that puts it ahead of others is its inclination to not bark. It barks only to alert its owner. It stays calm otherwise.

Coat Types and Colors

As it is evident from its name, A blue Boston Terrier has a blue coat with occasional white markings. Some dogs even have a blue nose as well as blue eyes. Other Blue Boston Terriers are not blue but grey or silver and give a shiny silver hue when seen in sunlight.

The coat of the Boston Terrier is pretty smooth and fine. The fine coat is easy to brush and it should be brushed twice within one week to keep the coat healthy. Brushing removes any ticks, burrs and fleas that may infect the skin.

There are other unique colors of Boston Terriers such as Brown Boston Terrier and Merle Boston Terrier. The Merle Boston Terrier is also a unique dog that has a patchy coat and blue eyes. It can also have two different colored eyes such as one blue and the other black.

Training a Blue Boston Terrier

The blue Boston Terrier is an intelligent dog and that is why it is easy to train it. The training of these dogs works similar to any other dog and works on the principle of rewards and punishments.

A blue Boston loves to be respected. While training, it is extremely important that you should be calm and composed. Never train your dog when you are angry or you might scold it. Scolding a dog can lead to your dog becoming stubborn to your instructions.

Always use simple words or hand gestures to assign tasks for your dogs to accomplish. Do not use more than one word or gesture for a single task. That can confuse your dog and it can result in the failure of the training. Always reward your dog when it obeys your command and punish when it disobeys. However, don’t ever be harsh on your dog.

Grooming a Blue Boston 

The coat of the Blue Boston Terrier is smooth. It does not attract very much dirt. The grooming of the coat can wait up to a fortnight. However, it is good to brush the coat of your dog once or twice a week. Brushing the coat keeps the fleas, ticks and burrs away. Also, while brushing you can collect the loose hair and shedding.

You also need to arrange for a dog shower at least once a week if you want its coat to smell fragrant. However, a shower can wait up to as often as six weeks. Brushing the coat before showering can help in loosening the dirt. This way it is removed easily.

Boston Terrier
Boston Terrier

Colors of the Boston Terriers

Lilac Boston Terrier

A lilac Boston Terrier is a combination of a dilute black and brown coat. On official dog standards, it is referred to as the seal color. There can either be a lilac Boston Terrier or a lilac and white Boston Terrier.

A lilac Boston Terrier has a coat that displays a distinct purple or bluish hue that sometimes looks like a dusty red coat. The nose is not black but also displays a lilac hue as well. As they age, their coat also gets darker in color.

However, lilac Boston Terriers have unique eyes that are not at all lilac but bright blue in color. The blue color lasts for weeks until it changes to a crisp green color. However, after the puppy has grown into an adult dog, the eyes color changes finally to become amber.

Black and White Boston Terrier

A black and white Boston Terrier is the classic color in this breed. This is the one that resembles a tuxedo and is alternately referred to as the tuxedo dog.

A classic black and white Boston Terrier has a white blaze, a white muzzle and also a white forechest. The rest of the body is black. The forelegs, however, may be partially white.

A blue and white Boston Terrier is similar to the classic black and white. However, where the classic terrier has a black coat, blue and white terrier has a blue coat in place of black.

The Merle Boston Terrier

Merle is a coat color that is specific to only a few dog breeds and Boston Terrier is one of those diverse breeds.  The Merle Boston can never be purebred. A Merle Boston is always a mixed breed. Since AKC registers purebred dogs only, A Merle Boston Terrier is not recognized by the club.

Merle is sometimes also known as harlequin or dapple. There are several health risks attached to this dog. That is because the gene that produces Merle color is also responsible for eye and ear disorders in dogs.

Brindle and White Boston Terrier

Brindle is not a color but a pattern. This pattern occurs with a color. Brindle pattern can occur with black, dilute lilac and blue and brown coats. Brindles come in many shades from very light to extremely dark.

The standard brindle and white should be a black coat with a brindle pattern over the black color along with white markings. The white markings are found on, but are not restricted to, blaze between the eyes and the forechest.

Seal and White Boston Terrier

American Kennel Club describes the seal as a black color when viewed without sunlight and when viewed in sunlight a seal has a red cast. The red hue is not visible as it may look like a dark brown or a medium brown because of the red undertones.

AKC recognizes black seal Boston Terrier only. Liver, red or fawn seal Boston Terriers are not recognized by the AKC. A seal and white Boston Terrier has a seal-colored coat with the usual white markings on the blaze, muzzle and chest front. Purebred dogs have a black nose and brown eyes.

Red and White Boston Terrier

A red and white Boston Terrier comes in a red coat. The color variations may range from a copper color to a deeper red. The dog has usual white markings at the same spots. The white spots are found on the blaze between the eyes, at the muzzle and on the front chest. The eyes of these dogs are amber or hazel. The nose of these dogs is red.

Liver and White Boston Terrier

The coat color of liver and white Boston Terriers is darker than the red with usual white markings. The coat appears dark brown. The usual white spots are on the blaze, muzzle and front chest. The forelegs can also be partially white.

Fawn Boston Terrier

There are many shades of fawn. From a light fawn that looks like champagne color to a darker fawn that looks like red, the shade variations of fawn Boston Terriers are many. The coat color is fawn with occasional white markings. A distinctive feature is that their coat has a combination of fawn and black hair. This variation gives it a boxer-like appearance.

While the coats of Boston Terriers are found in a wide variety of colors, they are not found in tricolor. There is no Blue Belton Boston Terrier. However, there is a blue belton English Setter that is known as the Gentleman of the world.

Pros and Cons of owning a Blue Boston Terrier


  1. Blue Boston Terrier is a family dog that makes it a great pet. They are kind to children and the elderly. Their attention seeking and playfulness makes them a perfect choice as a family dog.
  2. They are quiet dogs and they never bark. They don’t disturb neighbors nor create a commotion at night for no reason. Bostons bark only to alert their owner.
  3. The grooming requirements of a Blue Boston are below average. They have a smooth coat that needs brushing once in a fortnight. Their shedding level is below average. They also don’t drool.


  1. The digestive system of a Blue Boston Terrier is weak and they are susceptible to digestive disorders. Once their stomach is upset, they pass wind a lot.
  2. They have very big protruding eyes. Although their eyes look cute, they are vulnerable to risk or injury. Most dogs with large protruding eyes can end up with scratched cornea.
  3. Sometimes these dogs become stubborn and they are difficult to handle.

All Blue Boston Terrier Conclusion

All Blue Boston Terriers are medium sized dogs that are known for their companionship. They are family dogs. All Blue Boston Terriers have a blue coat but they are not purebred and that is why they are not recognized by the AKC.

However, these dogs have a very unique color. Other unique coats that are found in the Boston Terrier breed include the lilac Boston Terrier, merle Boston Terrier and the blue and white Boston Terrier.

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References and Further Reading:

[1] American Kennel Club, Boston Terrier Information.




  • Denise Leo

    My name is Denise Leo, and I hail from Australia. My journey with dogs, especially with the delightful Pomeranian breed, has been a lifelong passion extending over 50 years. I have had the honor of breeding and exhibiting close to 100 Pomeranian Champions, dedicating many years to the intricate art of dog training across various disciplines. Beyond the show ring, my experience stretches to the pastoral fields as both a Dairy Farmer and Beef Cattle Breeder, where working with dogs of all breeds has been an integral part of my daily life. This diverse exposure has deepened my understanding and appreciation for these incredible animals. I firmly believe that dogs are the most extraordinary beings in our universe, capable of offering us unconditional love that surpasses even their own self-interest. The countless wonderful dogs that have shared my life over the years have not only brought immense joy and companionship but have also profoundly enriched my existence in ways I could never have imagined. About us page