Nasal Discharge in Dogs

Written By Darlene Stott
Published: 05/26/2017Updated: 08/05/2021
Veterinary reviewed by Michele K.
Nasal Discharge in Dogs - Symptoms, Causes, Diagnosis, Treatment, Recovery, Management, Cost

What is Nasal Discharge?

If your dog is showing other signs such as increased body temperature, lack of appetite, excessive sleepiness, or other abnormal behavior, you should see a veterinarian right away. In most cases, nasal discharge is found to be an allergy or upper respiratory infection such as bronchitis or pneumonia. Less frequently, lower respiratory issues can involve the bronchi or trachea.

Other causes such as dental disease, neoplasia, trauma, foreign bodies in the nasal passage, and fungal infection are not as common, but possible. Nasal infections and other upper respiratory infections affect brachycephalic (flat-faced) dogs more than others. Some of these dogs include Shih Tzus, Pugs, French or English Bulldogs, Boston Terriers, and Pekingese.

Nasal discharge is a common condition in dogs, and may not be a condition at all. Some dogs just get runny noses once in awhile. However, if the discharge is any color besides clear or if he has other signs or has a hard time breathing, you should make an appointment for your dog to see a veterinarian as soon as possible. Nasal discharge may be caused by allergies, respiratory virus (parainfluenza, adenovirus, or distemper), parasitic infestation, or even dental problems.

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Symptoms of Nasal Discharge in Dogs

The signs of nasal discharge in dogs vary depending on the cause of the discharge. Many dogs can have a runny nose for no reason whatsoever at times and you may not even notice anything except a wet nose. In that case, there is no need to contact a veterinary professional. However, you should make an appointment if your dog also has any of these signs:

  • Wet, runny nose for longer than 24 hours
  • Red, swollen or puffy eyes
  • Loud breathing
  • Panting
  • Bad breath
  • Rubbing or pawing at nose and face
  • Head shaking
  • Trouble breathing through nose
  • Coughing
  • Appetite loss
  • Agitation
  • Depression
  • General malaise

 Types

The type of nasal discharge can be helpful in determining the condition so you should tell the veterinarian if your dog’s runny nose looks like any of these:

  • Hemorrhagic (bloody) is usually caused by trauma or dental disease
  • Serous (watery, thin, clear) is usually just an allergy
  • Mucous (thick) may be yellow or white and is accompanied by inflammation
  • Purulent (green or yellow) is usually caused by bacterial infections
  • Constant or intermittent
  • Both nostrils involved or just one

Causes of Nasal Discharge in Dogs

  • Allergies usually do not cause any other signs besides clear nasal discharge, runny eyes, sneezing, and coughing; this condition usually happens seasonally from allergens like pollens, grass, or mold
  • Infections are usually more noticeable due to the color of the discharge (yellow or green) and the other symptoms such as malaise, fever, and general ill behavior
  • Foreign bodies can include anything from a stick to a rock, or even a bug or other strange items
  • Tumors usually only occur in older dogs that are over eight years of age. There is usually a bloody discharge and deformity, weight loss, and overall weakness

Diagnosis of Nasal Discharge in Dogs

To diagnose nasal discharge in dogs, your veterinarian will need to do a complete physical examination including vital signs, weight, general coat condition, palpation, and auscultation. In addition, a sample of the discharge will be taken for microscopic evaluation and cultures. The veterinarian may also use an endoscope to look into your dog’s airway through the nasal passage.  Also, laboratory tests may be performed such as a urinalysis, fecal exam, and blood tests. Finally, chest x-rays might be done to check the lungs, and the veterinarian may also want to get a CT scan, ultrasound, and MRI if needed.

Treatment of Nasal Discharge in Dogs

The treatment for nasal discharge will first include oxygen therapy if your dog is having trouble breathing. Further treatment depends on the cause of the condition.

Allergies

Allergies are typically treated with antihistamines, corticosteroids, and eliminating the allergen as much as possible. There are many options for treating allergies medically.  

Infections

Bacterial infection is usually treated with antibiotics, fungal infection is treated with antifungals, and parasites are treated with anti-parasitic medication. If your dog has pneumonia or another serious lung infection, the veterinarian may decide to keep him overnight for breathing treatments and observation.

Foreign Body

Depending on the item in your dog’s nasal passage and how far it is embedded in his nose, surgical removal may be necessary.

Tumor

A tumor in a dog’s nasal passage may be benign, or malignant (cancer). The treatment might include surgical removal of the tumor.  

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Recovery of Nasal Discharge in Dogs

Most cases of nasal discharge have excellent prognoses. The sooner you get treatment the better, so it is always important to see the veterinarian right away if your dog has a discharge from the nose.

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Nasal Discharge Questions and Advice from Veterinary Professionals

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Bernedoodle

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4 weeks

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My pet has the following symptoms:
Sneezing, Always Hungry, Sneezing Any Liquid We Give Her Out Of Her Nose, Up And Down In Weight
We have a 4 week old puppy that no matter what liquid we give her she sneezing it out of her nose. Her weight keeps going up and down and when she was born she was dead. She doesn't eat hard food at all. She seems a little slower then siblings and we have had her on amoxicillin and now Doxycycline but nothing seems to work. She doe not have a cleft palate and vet said the lungs sound fine.

Aug. 6, 2020

Answered by Dr. Michele K. DVM

0 Recommendations

Thank you for your question. If fluid is coming out of her nose, there is some communication between her oral and nasal cavities, which is not normal. If she starts eating hard food, that may get better, but it may continue to be a problem. It would be a good idea to have frequent rechecks with your veterinarian, as things can become more obvious as she gets older. I hope that all goes well for her.

Aug. 8, 2020

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Golden Retriever

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Eleven Weeks

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My pet has the following symptoms:
Runny Nose
Hello! My puppy has been sneezing for a few days now. His left nostril has a yellowish discharge that comes out when he sneezes. The right nostril appears to be a normal runny nose. When he sleeps, there is occasional water from his runny nose on the floor. Any idea what the yellow discharge could be and how to fix it? His appetite/energy/sleeping is normal. P.S It would not let me proceed without selecting a medication, he is not on any medication for this! Please ignore Amitraz as he is not on that!

Aug. 6, 2020

Answered by Dr. Michele K. DVM

0 Recommendations

Thank you for your question. That is a lot of discharge. He may have an infection or a problem with his nose, and it would be a good idea to have him seen by your veterinarian, as they can examine him,see what might be going on, and get him medications if needed. I hope that all goes well for him!

Aug. 8, 2020

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