Get

In Your Inbox

Dogster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Chest Bone Deformities in Dogs: Our Vet Discusses Signs, Causes & Care

A veterinarian examines a chihuahua puppy_

Pectus excavatum and pectus carinatum are the most common chest bone deformities in dogs. Even though they are the most common, both conditions are still considered rare. Some dogs will have issues with these conditions, while others can live normal lives. Read on to learn more about these deformities below.

divider dog faces oct 2024

What Is Pectus Excavatum and Pectus Carinatum?

Pectus excavatum and pectus carinatum are uncommon congenital malformations of the chest wall. Pectus excavatum is when the sternum (breast bone) and cartilage of the ribs grow inwards (funnel chest). Pectus carinatum, also known as pigeon breast, is when the sternum and ribs grow and protrude outwards. From birth, you will be able to tell if your dog has either pectus excavatum or pectus carinatum. These are both considered congenital disorders — “a condition that is present and identifiable at birth” — also known as a birth defect.

What Are the Signs of a Chest Bone Deformity in Your Dog?

Pectus Excavatum Pectus Carinatum
Sternum Depressed inward (visible indentation) Protrudes outward
Chest Appearance Concave or sunken Convex or bulging (rounded)
Severity Can cause significant respiratory and cardiac issues Usually less severe; may be linked to congenital heart problems
Other Signs Difficulty and rapid breathing
Wheezing
Exercise intolerance
Less common overall
In severe cases, breathing difficulty and exercise intolerance may be present

These are deformities present at birth. If your dog starts to have visible abnormalities in their chest shape at an older age, there is something else going on and you should seek veterinary care immediately.

Did you know you can speak to a veterinarian without having to travel? Just head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content Savings V1

Dog Breeds Most Affected By Chest Bone Deformities

These conditions are more commonly seen in brachycephalic breeds, but genetic predisposition can also play a role. The following breeds are reported to have a higher incidence:

  • Maltese
  • English Bulldog
  • French Bulldog
  • Pug
  • Pekingese
  • Shih Tzu
  • Boston Terrier
  • Boxers
  • Dachshunds
  • Chihuahua
  • Welsh Terrier
  • Welsh Springer Spaniel

What Are the Causes of Dog Chest Bone Deformities?

Both pectus excavatum and pectus carinatum are congenital, which means puppies are born with the condition. There is some evidence that the traits may be inherited. An inherited trait means that a trait or condition of one or both parents is passed on to the offspring. However, there are also cases of puppies born with either deformity to families with no other history of either condition.  In other words, scientists and researchers are unsure if there is a genetic link at this time.

If your puppy has either pectus excavatum or pectus carinatum, it’s recommended that you get them spayed or neutered and do not breed them. Because both conditions are rare but sometimes inherited, there is no way to predict whether offspring will be affected. The responsible thing to do is not to risk passing down either deformity to future puppies.

divider dog paws oct 2024

How Do I Care for a Dog With Pectus Excavatum or Pectus Carinatum?

a dog about to undergo surgery
Image Credit: Masarik, Shutterstock

The care your dog will require depends on the severity of the condition. Unfortunately, some dogs will not survive if they are severely affected, as their lungs and heart won’t be able to function properly, and they, therefore, cannot sustain life. Other dogs may be surgical candidates to fix the condition, though routine surgery is not typical. This will need to be performed by a board-certified veterinary surgeon.

If your dog is born with either condition, it is best to keep them as quiet as possible and not allow them to wrestle, run, or play without supervision. Your dog may have exercise intolerance or become winded easily after exercise. Others may be more sensitive to touch or handling.

divider dog paws 3 oct 2024

Frequently Asked Questions

Can My Dog Be Bred If They Have a Chest Bone Deformity?

It is recommended that you do not breed a dog affected with either chest bone deformity. Because scientists have not been able to find a genetic link, there is no guarantee that the puppies of such breeding won’t be born with severe abnormalities.

Where Can My Dog Have Surgery If They Have a Chest Bone Deformity?

Surgery should only be performed by a board-certified veterinary surgeon. Speak with a veterinarian about the closest specialty center to you. You may need to travel to a veterinary university since it’s a specialized procedure.

Dog surgery
Image Credit: Olimpik, Shutterstock

divider single dog paw oct 2024

Conclusion

Pectus Excavatum and Pectus Carinatum are the most common chest bone deformities in dogs. Even though they are the most common, both are still considered very rare. The conditions are present at birth, and you will notice an obvious deformity in your puppy’s chest. The severity of the deformity will determine if there is any treatment available. Some dogs may be surgical candidates, but finding a surgeon who can perform the procedure may be difficult. Unfortunately, some puppies may not survive due to their birth defect.


Featured Image Credit: OLESYA BOLTENKOVA, Shutterstock

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Dogster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Dystocia in Dogs: Our Vet Discusses Signs, Causes & Care

Dystocia is the scientific term for a difficult birth. In other words, your female dog is unable to naturally pass their puppies through...

pregnant Brussels Griffon dog sleeping on the bed

Portosystemic Shunts in Dogs (PSS): Signs, Causes & Treatment (Vet Answer)

Portosystemic shunts are defects in the blood flow between the abdominal organs and the liver. Shunts are due to abnormal blood vessels, shunting...

male veterinarian doctor holding a black puppy

Indigestion & Acid Reflux in Dogs: Our Vet Explains Causes, Signs & Care

Does your dog gag, retch, or smack their lips? Or have you noticed small puddles of clear fluid or undigested food on the...

Sad tired beagle dog on sofa. Sick dog.

Cysts on Dogs: Our Vet Explains the Signs, Causes & Care

Dogs can suffer from all types of lumps and bumps. Some of these are benign (non-cancerous), while others are malignant (cancerous). Cysts can...

close-up photo of a dog with lumps on his skin before the surgery

More related

Doberman pinscher dog with tail docked

Dog Tail Docking & Ear Cropping: Our Vet Discusses Ethics & Health Considerations

From the first wolves that crept forward to share the warmth of our fires and feed on our leftovers, dogs have been happy...

Veterinarian doctor is making a check up of a australian shepherd dog at clinic

How Many Ribs Do Dogs Have? Vet-Approved Anatomy Facts & Info

The rib cage of a dog serves the function of protecting the internal chest organs, particularly the lungs and heart. That speaks to...

dog scratching its body

Ehrlichiosis in Dogs: Our Vet Discusses Signs, Causes & Treatment

It’s time to talk about ticks! Is your dog on a reliable flea and tick prevention product? We worry about tick-associated illnesses because...

doberman dog in late autumnx

How Much Do Dobermans Weigh? Growth & Weight Chart

The Doberman is a medium-to-large breed dog that has won the hearts of dog owners worldwide. They are so beloved, there are two...

Keep reading

Members Mark vs Kirkland Dog Food (2025 Comparison): Pros, Cons, and What to Choose

It is no secret that Americans love their dogs. In fact, according to the American Pet Products Association, 68% of US households include a pet—and that number is only growing. With so many people making pets a part of their...

Dogster_Dog Food Members Mark VS Kirkland

My Puppy Is Overweight: 5 Vet-Approved Tips on What to Do

If you have an overweight puppy, we recommend consulting a veterinarian before implementing any suggestions in this post, as it may be related to diet or health, and making sudden changes to your puppy’s diet may bring on medical issues....

Husky puppy on a weighing scale

Can Dogs Eat Licorice? Vet-Verified Nutrition Facts & Info

Our pets can eat all sorts of goodies that we can prepare from the comfort of our own kitchens. However, when it comes to sweets, it isn’t always the best idea to share with our four-legged friends. Licorice is not...

twizzlers licorice candies

Just Food For Dogs Review 2025: Our Expert’s Opinion

Dog owners are often on a constant quest to find the perfect dog food for their doggies. With many options available today in the dog food market, it can sometimes get confusing. Dry dog food manufacturers offer plenty of promises...

Just Food For Dogs Dog Food

Can Dogs Eat Strawberry Ice Cream? Vet-Verified Facts & Safety Guide

Who doesn’t love strawberry ice cream? It is a summer favorite that can be enjoyed in many ways, and your dog’s curious eyes may have you wondering if it’s a treat you can share with them. So, can dogs eat...

Can Dogs Eat Strawberry Ice Cream

How Much Food Does a Great Dane Need? With Feeding Chart

Great Danes are one of the biggest dogs in the world, and it’s no surprise when you meet one face to face. If you decide to add one of these gentle giants to your family, one of the first things...

great dane dog outdoor

What Can French Bulldogs Eat? Vet-Reviewed Diet & Foods

According to the American Kennel Club (AKC)1 , the French Bulldog is the most popular breed in the United States, overtaking the beloved Labrador Retriever. As a brachycephalic dog, the Frenchie is vulnerable to several health conditions. Therefore, it behooves...

french bulldog eating or drinking from a bowl

Orijen vs Acana Dog Food: 2025 Comparison, Pros & Cons

The Orijen and Acana dog food companies dominate the market with their innovative recipes, developed alongside nutritionists. The formulas keep getting more advanced, working to give dogs a nutrient-rich diet that is best for their bodily systems. But which brand...

Dogster_Dog Food Orijen VS Acana