Wheezing in dogs can be a sign of a serious breathing emergency—know the warning signs.

If your dog is wheezing, how can you tell if you’re dealing with something like an allergy vs. a life-threatening breathing emergency? Below is a list of symptoms that could signal an emergency if your dog is wheezing. Always err on the side of caution and bring your pet to VEG ER for Pets immediately if you see any of the following symptoms in your dog.

Dog wheezing emergency warning signs

Dog wheezing? Look for these signs in your dog and seek emergency vet care:

• Wheezing that doesn’t resolve with rest 

• Panic or distress

• Wheezing that appears suddenly

• Wheezing after eating, playing, chewing or swallowing

• Blue or purple gums/tongue (signs of hypoxia or lack of oxygen)

• Wheezing with signs of heatstroke

• Severe lethargy

• Exercise intolerance

• Nasal discharge or bleeding

• Coughing or gagging in addition to wheezing

• Difficulty breathing - fast, shallow, labored breathing

• Increased respiratory effort (especially using the belly)

• Collapse or fainting

It’s helpful to understand how different breathing issues sound and present themselves in your dog to assess a critical health emergency from a more benign ailment. Here’s a guide on identifying what you may be hearing, whether it's:

• Wheezing

• Stridor

• Reverse sneezing

We'll look at their various causes, treatment protocols, and what you can do to prevent or minimize wheezing and breathing issue risks in your dog.

Brachycephalic dogs like Pugs, Boxers, and Bulldogs are more prone to breathing problems. If your dog is wheezing or having trouble breathing, VEG animal hospitals are open 24/7 to help.

Wheezing, stridor, and reverse sneezing in dogs: what they are and how they sound

Not every strange noise is wheezing—learn the difference between wheezing, stridor, and reverse sneezing.

Wheezing

• Sound: High-pitched, whistle-like noise (often on exhale)

• Location: Lower airways (lungs)

• Often associated with: Asthma-like airway narrowing, allergic reactions, bronchitis, heart disease, or inhaled foreign objects

• Meaning: Airflow is restricted deeper in the lungs

• Urgency: Can be serious—especially if paired with labored breathing

Stridor

• Sound: Harsh, raspy, or squeaky noise (mostly on inhale)

• Location: Upper airway (nose, throat, larynx, windpipe)

• Often associated with: Airway obstruction, swelling from allergic reactions, laryngeal paralysis, collapsing trachea, or masses

• Meaning: Possible airway obstruction or swelling

• Urgency: Often an emergency—seek urgent vet care if your dog is struggling to breathe

Reverse Sneezing

• Sound: Rapid snorting, “inhaling a sneeze”

• Location: Nasopharynx (behind the nose and soft palate)

• Often associated with: Irritation from dust, pollen, excitement, pulling on the leash, or mild inflammation and common in small breeds and brachycephalic dogs (pugs, bulldogs)

• Meaning: Usually a benign irritation episode

• Urgency: Typically harmless; seek care if episodes are frequent, prolonged, or cause distress

10 causes for dog wheezing

Dog wheezing can have many causes, some of which are more easily managed and some that are truly life-threatening. Your dog’s breed, age, overall health and certain habits can impact how wheezing can present itself and how serious it may be. 

Allergies: the most common cause of wheezing in dogs

While seasonal allergies are common and more uncomfortable than life-threatening, wheezing accompanied with facial swelling or hives, can point to anaphylaxis - a severe allergic reaction requiring immediate emergency care.

Allergies are the most common cause of wheezing in dogs. Many dogs who have seasonal allergies may develop wheezing as one of their symptoms during the times of year when pollen counts are at their highest. The same may be true of contact allergies or exposure to any other allergens that could make their way into your dog’s space.

If your pup just recently started wheezing and/or continues wheezing, it’s important to bring him/her to your primary care vet or VEG ER for Pets to confirm the issue is allergies and not something else. Our vet can also provide allergy medication if allergies are diagnosed.

Anaphylaxis is a severe, life-threatening reaction to an allergen that can occur in response to insect stings, medications and some foods. If you notice hives, itching, redness and/or swelling of the eyes, face or mouth, with or without wheezing, get your dog to an emergency vet immediately, since an anaphylactic response to an allergen is a true life-threatening emergency. 

Note: Dogs with flat faces or short snouts (brachycephalic breeds) are often more prone to wheezing from allergies than others. 

Certain foods can trigger allergic reactions in dogs, which in turn can cause wheezing. In this blog, you'll find some important preventative measures you can take to help avoid wheezing in dogs.

Inhaled foreign objects can cause dog to wheeze

Dogs can inhale toys, treats, grass or pebbles, leading to sudden, dangerous airway blockage. If wheezing starts suddenly, head to a VEG dog hospital immediately.

In some cases, dogs may inhale a foreign object which can then become lodged and cause a blockage in their nasal passages or windpipe. This often happens when dogs eat too quickly and inhale while eating, causing food pieces to become stuck where they shouldn’t be. However, it can also occur if your dog tries to swallow a piece of a broken toy, a stick, or any other item that he shouldn’t.

If this occurs, you will need to take your dog to the emergency vet for the obstruction to be removed. 

Heartworm may show up as wheezing

Wheezing can be an advanced stage of heartworm disease in your dog, but one that can still be managed.

Unfortunately, heartworms may also be a cause of dog wheezing. Heartworms may eventually travel from the dog’s heart to his lungs as well as other organs throughout his body. This is an advanced stage of heartworm disease, but it is still manageable with the help of regular vet care.

Dogs who have heartworms severe enough to cause wheezing will most likely never be completely healed from this disease. However, your vet can work with you to figure out the best way to manage symptoms and help him breathe more easily as well.

Wheezing due to nasal mites in dogs

Nasal mites spread easily from dog to dog, and while not a major problem, can be a cause of wheezing in your pup.

Nasal mites are a less troubling problem than heartworms, but they still require vet care to treat and heal your dog. Nasal mites may cause your dog to wheeze frequently or trigger reverse sneezing, and can also cause him to scratch his face or rub his snout on the floor or furniture often. Be on the lookout for these symptoms if you think your dog may have nasal mites.

Nasal mites are not a major problem, but they can spread from dog to dog. If one of your dogs has nasal mites, it is very likely your other dogs will develop this type of infection too. Be on the lookout for symptoms if you bring your dog to daycare, dog parks, or have recently kenneled them, since nasal mites are highly contagious and most often spread in dog group settings. 

Wheezing in dogs due to heart disease

Pulmonary edema - fluid buildup in the lungs due to poor circulation from heart disease - can be a cause of wheezing in some dogs. 

Dogs with heart disease may develop wheezing after some time due to pulmonary edema, or fluid buildup in the lungs caused by poor circulation from a weakened or diseased heart. This is not one of the first signs of heart disease, but it also isn’t one of the final ones. It generally develops partway through the progression of the disease for most dogs.

If your dog is diagnosed with heart disease, your vet will be able to help you choose what the best course of action may be for you and your pet moving forward.

Asthma or bronchospasms can cause wheezing in dogs

Keep your dog away from exposure to harmful airborne elements like smoke, chemicals, and even household air fresheners to prevent possible asthma triggers.

Although dogs are less likely to develop asthma than cats, exposure to allergens or strong irritants like smoke, chemicals or even seemingly benign household items like air fresheners or essential oils can trigger a sudden narrowing of your pet’s lower airways leading to a bronchospasm and wheezing in some dogs. 

Wheezing in dogs can be for a variety of reasons, some very serious. Call VEG emergency vet hospital if your dog is wheezing. We're here to help 24/7.

Wheezing due to lower respiratory infection, pneumonia, or bronchitis in dogs

Pulmonary infections, pneumonia, and bronchitis can narrow airways and cause wheezing in your dog. If your pup shows other signs of illness like lethargy or loss of appetite, bring him to the vet ASAP.

As with people, infections in the lungs or bronchial tubes can cause inflammation that can restrict your pup’s airflow, resulting in wheezing. This may also be paired with other symptoms of illness such as coughing, lethargy, fever, or poor appetite.

Emergency veterinarians can run imaging tests, like chest X-rays as well as  bloodwork to confirm a diagnosis and may provide nebulization to help your dog breathe more easily.

Tracheal collapse can cause dog to wheeze

Small breed dogs are prone to tracheal collapse. Heat, excitement, or pressure on the neck can trigger wheezing or a more serious breathing crisis.

Some dogs may have a collapsing trachea, which can occur with or without the presence of heart disease. In small breeds like Chihuahuas, Yorkshire Terriers and Pomeranians, the cartilage rings that make the trachea rigid can weaken, causing it to flatten and restrict airflow. This can cause wheezing and a characteristic “goose-honk” often after exercise, or if your pup is excited or stressed.

These types of mild trachea collapse are usually benign, and limited to times when your dog gets “amped up!"

Laryngeal paralysis can cause wheezing in larger breed dogs

With age, some larger, older dogs can develop laryngeal paralysis, which typically develops slowly over time, but its severity can sometime increase quickly, requiring emergency intervention.

Older, larger, or medium-sized breed dogs like Labrador Retrievers, may be susceptible to laryngeal paralysis. This occurs when the nerves controlling the larynx degenerate, affecting the muscles that open it which, in turn, narrows the airway dramatically. Signs may include:

• Bluish gums

• Loud wheezing

• Stridor on inhalation

• Poor tolerance for heat or exercise

• Collapse

Brachycephalic Airway Syndrome (BOAS) can cause wheezing in dogs

Anatomy is an important part of breathing issues for brachycephalic (short-nosed) breeds. Heavy snoring, noisy breathing, or wheezing can be early warning signs of an airway emergency.

The anatomy of brachycephalic (short-nosed) breeds such as Bulldogs, Pugs, and Boston Terriers predispose them to airway obstruction. They have narrow (stenotic) nostrils, elongated soft palates, everted laryngeal saccules (a condition where tissue in front of the vocal cords is pulled into the windpipe, partially obstructing airflow), and may also have under-developed tracheas. Stress, heat, or exercise can push them into respiratory distress quickly, so close monitoring and quick emergency care are essential. 

Diagnosing and treating dog wheezing - what to expect

What happens when you bring your dog into the emergency vet for wheezing? Stabilizing your dog is the first critical step in treating your dog for any breathing issue like wheezing.

Emergency vets are equipped to stabilize breathing, relieve airway obstruction, and treat the underlying cause — often saving dogs’ lives in critical moments.

Your dog will probably receive supplemental oxygen while the vet physically examines your pet to assist his breathing and make him more comfortable. 

Diagnosing wheezing in dogs

Additionally, to diagnose the cause of wheezing, the vet may also perform:

• Chest x-rays or imaging to check lungs, heart, and airway structures

• Bloodwork to assess infection, heart function, and oxygenation

• Ultrasound, if needed

• Endoscopy or airway exam, in cases of suspected foreign body or laryngeal paralysis

Treating dog for wheezing

Treatment of your dog’s wheezing will be based on the diagnosis. After stabilizing your dog and providing an initial physical exam, your vet may want to include additional diagnostic tools and/or treatments for your pup, which could include:

• Bronchodilators or nebulization

• Steroids or antihistamines

• Sedation to calm anxiety and reduce breathing effort

• Foreign body removal

• Surgery (for laryngeal paralysis, tracheal collapse, or BOAS)

• Continuous monitoring and supportive care (fluids, oxygen, ICU-level support)

VEG ER for Pets treats emergencies for dogs and all pets. If your dog is wheezing, get prompt, compassionate care at your nearest VEG vet hospital.

Preventing dog breathing problems like wheezing

While not all causes of wheezing can be prevented, you can help reduce risk factors, especially for high-risk dogs.

• Carefully supervise dogs who chew or play with small objects (especially puppies!) to reduce the risk of their inhaling foreign bodies.

• Also keep a close eye on scent hounds like Dachshunds, Beagles, Bassets and Bloodhounds when they’re trailing a scent - they may inadvertently inhale a foreign object (pebbles, mulch, leaves, etc.).

• For brachycephalic breeds, minimize heat stress by avoiding exercise in hot weather, encouraging rest, and using a harness rather than a collar to reduce pressure on the airway.

• Keep your dog at a healthy weight — obesity can worsen airway collapse.

• Avoid exposing your dog to smoke, chemical irritants, aerosols, air fresheners, and essential oils, some of which can be quite toxic to dogs. 

• Keep a close eye on your dog for signs of allergic reactions or anaphylaxis, especially after being stung by a bee or introduced to a new medication. 

• Observe your dog’s normal resting breathing rate so you can more easily identify when something is off.

Is my dog wheezing an emergency?

The answer is it could be, and wheezing and breathing problems in your dog can escalate in minutes. If you’re wondering if you should come in, don’t wait - call us anytime and you can speak with a veterinarian who can answer your medical questions. We'll let you know if you should come in right away or if it can wait for your primary care vet.

Call VEG animal hospital if your dog is wheezing

VEG is available to you and your pet 24/7, including holidays, to ensure your pet’s health and well-being. We specialize in emergencies, so we’re skilled and equipped to handle the unexpected at all of our VEG locations.

Bring your pet in - no appointment needed - or call VEG, where you’ll speak directly to an emergency veterinarian who will help you decide on the next step for caring for your pet. You’ll breathe easier knowing your pet is getting the best possible care.