Dog Respiratory Disease: Causes, Symptoms, and When to See a Vet

Respiratory illness is one of the more common reasons dogs are brought in for veterinary care, and the range of causes is broader than most pet owners realize. From contagious infections picked up at the dog park to structural issues, allergies, and heart disease, the underlying cause matters when it comes to treatment. If your dog is coughing, breathing differently than usual, or seems off in ways you cannot quite name, understanding what might be behind it can help you decide when to call us. At Pawtown Veterinary Care in Bend, Oregon, we see respiratory cases regularly and are here to help you figure out what is going on with your dog.

Respiratory symptoms in dogs can range from mild and short-lived to severe and rapidly progressing. Some cases resolve on their own with rest, while others require prompt veterinary attention and treatment. Knowing the difference is not always easy from home, which is why we encourage pet owners not to wait too long when something seems wrong with how their dog is breathing or how frequently they are coughing.

Common Causes of Respiratory Disease in Dogs

The most common respiratory condition in dogs is Canine Infectious Respiratory Disease Complex, often called kennel cough. It is highly contagious and spreads through respiratory droplets when dogs are in close contact with one another at kennels, dog parks, grooming facilities, or training classes. According to the American Animal Hospital Association, kennel cough can be caused by multiple viruses and bacteria, including Bordetella bronchiseptica, canine parainfluenza virus, and adenovirus. Most dogs with kennel cough develop a dry, hacking cough and recover within a few weeks, but puppies, senior dogs, and dogs with underlying health conditions can develop more serious complications including pneumonia.

Other causes of respiratory disease in dogs include the following.

• Pneumonia, which can be bacterial, viral, or aspiration-related and typically causes more severe symptoms than a simple upper respiratory infection
• Canine influenza, a contagious viral infection that produces symptoms similar to kennel cough but is often accompanied by fever and nasal discharge
• Allergies or environmental irritants, which can cause chronic coughing, sneezing, or nasal discharge without an infectious cause
• Heart disease, which can lead to fluid accumulation in the lungs and produce a cough that is often worse at night or after activity
• Tracheal collapse, more common in small breeds, which produces a distinctive honking cough

Cheatgrass and foxtail awns are also worth mentioning for Central Oregon dogs. These plant awns can lodge in the nasal passages or airways and cause sneezing, nasal discharge, or respiratory distress. Dogs who spend time on trails or in open fields during summer and fall are at particular risk.

Symptoms to Watch For

The most common symptom of respiratory illness in dogs is coughing, but it is worth paying attention to what kind of cough your dog has and when it occurs. A dry, hacking cough after time with other dogs often points toward an infectious cause. A wet, productive cough with nasal discharge or labored breathing may indicate something more serious like pneumonia. A cough that worsens at rest or at night can suggest a cardiac component.

Other symptoms that often accompany respiratory illness include sneezing, nasal or eye discharge, lethargy, reduced appetite, fever, and exercise intolerance. Any of these alongside a cough should prompt a veterinary visit rather than a wait-and-see approach, especially if symptoms are worsening or your dog is very young, very old, or already managing another health condition. Our same-day appointments make it easy to get your dog seen quickly when you are concerned.

When to Seek Urgent Care

Some respiratory symptoms require prompt attention rather than a scheduled appointment. Bring your dog in right away if you notice open-mouth breathing or visible effort with each breath, blue or pale gums, extreme lethargy or collapse, a cough accompanied by labored breathing that is worsening rapidly, or symptoms that appear suddenly and severely in an otherwise healthy dog.

These signs can indicate pneumonia, a serious cardiac event, airway obstruction, or another condition that needs to be evaluated urgently. Our urgent care team is available during business hours for situations that cannot wait. If something is happening outside of our regular hours, contact an emergency facility right away.

How We Diagnose and Treat Respiratory Illness

Diagnosing the cause of respiratory illness in dogs typically starts with a physical exam, listening to the lungs and heart, and a thorough review of your dog’s recent history, including any contact with other dogs or unusual environments. Depending on what the exam reveals, Drs. Erin Miller or Lauren Stayer may recommend chest x-rays, bloodwork, nasal swabs, or other diagnostics to narrow down the cause.

Treatment varies widely based on the diagnosis. Mild kennel cough may need only rest and monitoring. Bacterial infections are treated with antibiotics. Pneumonia often requires more intensive supportive care. Cardiac-related coughing is managed differently still, usually with medications that address the underlying heart condition. Getting to the right diagnosis is what makes treatment effective, and that starts with bringing your dog in.

Respiratory Care at Pawtown Veterinary Care

At Pawtown Veterinary Care, Drs. Erin Miller and Lauren Stayer approach every case with the same thorough, attentive care they would give their own pets. They take the time to listen to your concerns, examine your dog carefully, and explain what they are finding and what it means. We know that watching your dog struggle to breathe or cough repeatedly is stressful, and we want to help you get answers quickly.

If your dog is coughing, breathing differently, or showing any of the signs described above, do not wait to see if it clears up on its own. Request an appointment and let our team take a closer look.