Why is my dog coughing?

First published 27 Oct 2026

Our dogs can cough for various reasons, including environmental irritants, foreign bodies in their airways, parasites or underlying health conditions.

Our teams are frequently asked about dog coughing, which can occur for a variety of reasons.

While it’s often not a cause for concern, it can sometimes indicate underlying health issues.

If your dog has developed a frequent cough or a cough that is getting worse, please reach out to your local VetPartners practice for support.

What are the common causes of dog coughing?

Dog coughing causes can range from mild to more complex health conditions that will require veterinary treatment, and symptoms can overlap, so it’s always best to check in with your vet to determine the cause and start the right dog coughing treatment.

Environmental irritants

Substances such as dust, pollen, smoke, deodorants, air fresheners, perfumes and sprays can irritate the throat and cause inflammation, which can cause a dog to cough.

Foreign bodies

Dog coughing can be caused by foreign bodies, such as a stick or grass seed, becoming stuck in a dog’s airway.

Pulling on the lead

When a dog pulls on their lead, it puts pressure on their throat, which could lead to coughing. To prevent this, you might find it helpful to use a harness instead of a collar.

Infections

Airway infections such as chronic bronchitis and canine infectious respiratory disease complex (commonly referred to as kennel cough) can cause dog coughing.

Parasites

Parasites such as lungworms can cause dog coughing. Your vet can prescribe a suitable parasite treatment, as well as a preventative care plan that meets your dog’s individual needs.

Underlying health conditions

In some cases, health conditions such as heart disease, throat or lung cancer, tracheal collapse, laryngeal paralysis or idiopathic pulmonary fibrosis can cause dog coughing. This is rare, and many cases of dog coughing have mild causes.

When should I be concerned about my dog coughing?

You should contact your vet as soon as possible if:

Your dog has stopped eating.
Your dog is feeling unwell and has a cough.
Your dog’s coughing lasts for several days.
Your dog can’t sleep because of their cough.
Your dog collapses.
Your dog is coughing up blood.

While these symptoms are rare, and some dog coughing goes away by itself, it’s always safest to contact your vet right away if you notice them.

How can my vet help my coughing dog?

At your appointment, your vet will review your dog’s history and carry out an examination, and may recommend further tests.

Dog coughing treatments can vary depending on the cause of the coughing. Potential treatment options may include anti-inflammatories, parasite treatments or medications for underlying health conditions.

Book an appointment with your local VetPartners practice for further support and guidance.

FAQs

Why is my dog coughing so much?

The causes of dog coughing can vary, ranging from parasites and underlying health conditions to foreign bodies, environmental irritants and pulling on their lead.

If you’re worried about your dog’s cough or they have had it for several days, reach out to your vet for advice.

Should I take my coughing dog to the vet?

Yes – always contact your vet if your dog has stopped eating, is coughing up blood, feels unwell alongside a cough, has a persistent cough (lasting several days), can’t sleep because of their cough or collapses.

Can a dog start coughing due to allergies?

A dog’s cough can be caused by environmental allergens or irritants, such as dust, pollen, sprays, chemicals or cleaning products. If you’re worried about your dog’s cough or health, your veterinary practice can help.

Can a dog coughing be contagious?

Dog coughing can be contagious if the cause is a contagious illness, such as kennel cough. Kennel cough (canine infectious respiratory disease complex) is a highly contagious infection caused by several different viruses and bacteria.

You can help prevent kennel cough through vaccination against the main causes – this is typically required before a dog goes into kennels.

What can I do at home to help my dog’s cough?

The best thing to do is book an appointment with your vet. In the meantime, keep your dog indoors and calm, note when the coughing happens, and film a coughing episode to show your vet.

If your dog is otherwise feeling well, provide plenty of fresh water and their normal diet and limit the use of potential irritants at home. Never give your dog human or leftover pet medicines.