Why is my dog coughing?
The character of the cough is the most useful clue an owner can give a vet. A harsh honking cough after excitement is a different problem from a soft, moist cough that is worse at night, and both are different again from a cough with laboured breathing — which is an emergency.
Get this seen
This is worth a call to your vet rather than waiting to see how it goes, particularly if it has lasted more than a day or your pet is otherwise off-colour.
Ring immediately if
Your dog is struggling to breathe, has blue or grey gums, is coughing up blood or pink froth, or has collapsed. Any of those is an emergency.
They might have inhaled or swallowed something. Sudden violent coughing in a dog who was fine a minute ago, particularly around toys, sticks or food, needs urgent attention.
What the cough sounds like
A harsh, honking cough, often triggered by pulling on a collar or by excitement, and frequently ending in a retch that owners describe as bringing something up. Kennel cough is the classic cause, and it spreads readily where dogs mix. It is usually self-limiting in healthy adults but needs a vet call, and dogs should be kept away from others.
A soft, moist cough, worse at night or when lying down, and accompanied by tiring more easily, is the pattern that most warrants prompt investigation. Heart and lung conditions can present this way.
A cough in a small breed that sounds like a goose honk and comes on with excitement or pressure on the throat can indicate a problem with the windpipe itself. For those dogs a harness rather than a collar is standard advice, because it takes pressure off the trachea.
Coughing after exercise in long grass, or with a runny nose, may point at something inhaled or an infection.
What helps alongside the vet
Switch from a collar to a harness for walks if the cough is triggered by lead pressure. This is genuinely useful advice for tracheal problems and it costs nothing to try.
Keep the air clean — no smoking indoors, no aerosols or plug-ins near the dog, and avoid dusty environments while they recover.
Rest matters. Excitement and exercise both provoke coughing, and a dog recovering from kennel cough should be kept quiet and away from other dogs.
Film an episode if you can. A vet who hears the cough, even on a phone, is much better placed than one working from a description.
What can help
Things we stock that owners commonly use alongside a vet’s advice — not a substitute for it.
MPS Head Cover — Breathable Dog Head & Ear Protector
A comfortable, breathable alternative to the cone of shame — protects head and ear wounds or bandages while letting your dog move freely.
From£5.99
Leucillin Antiseptic Skincare Spray for Cats & Dogs
A versatile, alcohol-free antiseptic spray that cleans, soothes, and helps protect your pet's skin from bacteria, viruses, and fungi.
From£7.99
Absorbent Cotton Gauze Swabs for Pets – Pack of 100
Highly absorbent, low-lint cotton gauze swabs produced in clean conditions — a practical first-aid essential available in three size and ply combinations.
From£4.49
Red Dingo Classic No-Pull Dog Harness
Red Dingo Classic No-Pull Dog Harness in two colours, sizes Small to Large. Hard-wearing, comfortable and finished with solid hardware — and, like all Red Dingo gear, covered by their 5-year guarantee.
From£13.99
Common questions
- What does kennel cough sound like?
- Typically a harsh, honking cough, often followed by a retch that looks like bringing something up. It is frequently triggered by excitement or by pressure on the collar, and it spreads readily between dogs.
- When is a dog cough an emergency?
- Struggling to breathe, blue or grey gums, coughing blood or pink froth, collapse, or sudden violent coughing after possibly inhaling something. Any of those means ringing immediately.
- My dog coughs more at night — what does that mean?
- A soft, moist cough that is worse lying down, especially with tiring more easily, is the pattern most worth prompt investigation, as heart and lung conditions can present this way.
- Should I use a harness instead of a collar for a coughing dog?
- If the cough is triggered by lead pressure, yes. A harness takes pressure off the windpipe and is standard advice for dogs with tracheal problems.
- Can my dog give kennel cough to other dogs?
- Yes, it spreads readily where dogs mix. Keep a coughing dog away from others and ring your vet before bringing them into a waiting room.
Related
Sources
Written against guidance published by UK veterinary and welfare organisations. Always confirm specifics with your own vet.
Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.