
Shih Tzus are known to be prone to a few skull-related issues that you should be aware of.
Brachycephalic skull structure, a common characteristic of the breed, can lead to breathing difficulties and other health problems.
Shih Tzus are brachycephalic, meaning their skull is shorter than it is wide, which can cause their airways to be narrower and more prone to obstruction.
This can lead to symptoms such as panting, wheezing, and difficulty breathing, especially in hot or humid weather.
Related reading: Life with Shih Tzus
Health Risks
Brachycephalic dogs, like the Shih Tzu, are prone to health concerns due to their body shape.
Because of their compact skull, brachycephalic dogs are more likely to have breathing difficulties and heatstroke.
Many breeders know that these dogs are likely to have major health problems, but they still prioritize breeding them for their cute appearance.
These health issues can be painful and even life-threatening if left untreated.
Brachycephalic dogs often have bone problems, including abnormally shaped vertebrae and painful joints.
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Their compact jaw can also cause crooked teeth, leading to decay or gum disease over time.
In fact, many brachycephalic dogs are delivered by C-section, which can be a traumatic experience for the dog.
If you have a Shih Tzu or another brachycephalic breed, it's essential to keep a close eye on their health and take great care of them.
Brachycephalic Breeds
If you're considering getting a Shih Tzu or already have one, it's essential to know that they're part of a group of breeds known as brachycephalic.
Brachycephalic breeds have shorter snouts than other dogs, which can lead to breathing difficulties and other health issues. This is because their short noses and flat faces can cause their airways to become narrow and constricted.
Some common brachycephalic breeds include the Boston Terrier, Boxer, Bulldog, and Pug. These breeds are all prone to similar health problems due to their unique skull structure.
Here are some brachycephalic breeds you should know about:
- Boston Terrier
- Boxer
- Bulldog
- Bullmastiff
- Chow Chow
- French Bulldog
- Lhasa Apso
- Pekingese
- Pug
- Shih Tzu
Understanding the Issue

The Shih Tzu skull is a unique and distinct feature of this beloved breed. The Shih Tzu's skull is brachycephalic, meaning it is shorter in length than it is wide.
Their flat face and short muzzle are a result of selective breeding for a specific appearance. This can lead to breathing difficulties in some Shih Tzus.
A Shih Tzu's skull is typically measured from the stop to the occipital bone, which is the bony prominence at the back of the skull. This measurement is used to determine the skull's length and shape.
Head Outline
The Shih Tzu head is a broad and round shape, with the width between the eyes being particularly notable.
The eyes themselves are large, dark, and round, but not overly prominent, giving the dog a warm and friendly expression.
A good Shih Tzu head should have a square and short muzzle, but not one that's wrinkled or pinched.

The ears are large and carried drooping, with long leathers that are set slightly below the crown of the skull.
A definite stop is essential in a Shih Tzu head, which means the nose should be about one inch from the tip to the stop.
The jaw is broad and wide, with an undershot bite, and the teeth and tongue should not show when the mouth is closed.
A good head construction can be seen even in a puppy as young as a month old, before the coat has fluffed out.
It's actually easier to see the proportions of the skull when the dog is wet from a bath, as the hair won't obscure the features.
Worth a look: When Is a Shih Tzu Full Grown
Etiology
The origins of the brachycephalic skull shape in dogs are fascinating. Phenotypic selection led to this variability in canine skull shape, initially chosen for its strong bite force.
Dogs were bred for specific physical characteristics, and their facial features were altered to resemble those of human infants. This led to the development of breeds with round heads and foreshortened noses.

The external morphology of the dog head has been categorized into three types: dolichocephalic, brachycephalic, and mesaticephalic. Dolichocephalic dogs have long slender skulls and prominent noses.
The traits of mesaticephalic dogs lie between these extremes, but the characteristics of brachycephalic dogs are more distinct. A brachycephalic skull is characterized by a round head without a sagittal crest and with a braincase longer than the facial bones.
The Boston Terrier, Boxer, Brussels Griffon, and other breeds have been defined as having a brachycephalic skull.
Frequently Asked Questions
What is the shape of a Shih Tzus head?
A Shih Tzu's head is big and round, set high on the body with a forward-facing face. Its distinctive head shape is a key characteristic of the breed.
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