There are many reasons that a dog may cough. Most dogs cough occasionally, but if your dog is unusually lethargic, feverish or coughing up blood, see your veterinarian immediately.
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Kennel Cough
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Kennel cough is a very contagious respiratory illness. It spreads rapidly through kennels and boarding facilities, but a vaccine is now available.
Bacterial Pneumonia
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If left untreated, dogs with kennel cough can develop bacterial pneumonia. It can be successfully treated with antibiotics.
Allergies
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Allergies are a common cause of coughing in dogs. Dust, grass and cigarette smoke can irritate your dog's respiratory tract and cause a lingering, chronic cough.
Worms
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In puppies, certain parasitic worm infections can cause coughing. When puppies expel hook and round worms, they may cough or hiccup.
Choking
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Swallowing a large piece of food or rawhide chew can cause a retching sound that is similar to coughing. If the object isn't expelled quickly and your dog begins to panic, try to calm him. Contact your veterinarian immediately.
Snoring
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Certain flat-faced breeds may snore and cough more. If your dog is a heavy snorer, chances are good that she will cough more. This type of coughing---if it's severe and chronic---can be corrected by a surgical procedure.
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