Why is My Dog’s Nose Runny?

Dogs often communicate how they feel through subtle changes in their behavior, body language, and even nasal discharge. If you’ve been wondering, “Why is my dog’s nose runny?” you’re not alone. A runny nose in dogs can stem from several causes, ranging from mild irritants to more complex health conditions. Knowing when to seek veterinary care is key, and that’s where our team at Companion Animal Hospital of Wakefield can help.

Understanding the Function of a Dog’s Nose

A dog’s nose serves many purposes. It not only helps them explore the world but also plays a role in regulating temperature and moisture. A small amount of clear nasal discharge can be normal, especially during moments of excitement or after physical activity. This moisture helps dogs trap scent particles and enhances their incredible sense of smell.

However, when the discharge becomes excessive or takes on a cloudy, yellow, green, or bloody appearance, it may signal an underlying issue. The question “Why is my dog’s nose runny?” becomes more important when other symptoms—such as sneezing, coughing, or lethargy—appear alongside it. Paying close attention to changes in your dog’s nose can give you important insight into their health.

Common Reasons for a Runny Nose in Dogs

If you’ve noticed a persistent drip or discharge, several potential reasons may explain why your dog’s nose is runny. Some causes are temporary, while others may require veterinary diagnosis and care. Below are some of the most common explanations pet owners encounter.

Allergies

Dogs can develop allergies to many of the same environmental triggers that affect people. Pollen, dust mites, mold spores, and even cleaning products can lead to nasal inflammation and discharge. Seasonal allergies are particularly common in North Carolina, where pollen counts rise during spring and fall. A dog with allergies may show additional signs such as watery eyes, frequent sneezing, paw licking, or itchy skin. In many cases, the nasal discharge remains clear. However, chronic irritation can make symptoms worse over time. If you’re asking, “Why is my dog’s nose runny every spring?” allergies could be the answer. Your veterinarian can help pinpoint triggers and recommend a care plan.

Respiratory Infections

Viral and bacterial infections are another possible reason your dog’s nose is runny. Canine influenza, kennel cough, and canine distemper can all cause respiratory symptoms that include nasal discharge. These illnesses are often accompanied by other signs such as coughing, loss of appetite, or lethargy.

Infections may cause the nasal discharge to become thick, yellow, green, or cloudy. If the discharge has a foul odor or if your dog seems unwell, you should reach out to your veterinarian. Prompt diagnosis and treatment can reduce the risk of complications and help your dog recover more quickly. If you’re concerned, please call Companion Animal Hospital of Wakefield at (919) 488-5300 to schedule an appointment.

Foreign Bodies

Dogs use their noses to explore just about everything, and sometimes a small object can become lodged in the nasal passage. Grass seeds, dirt, and plant materials are frequent culprits. When this happens, your dog’s nose may produce continuous discharge from just one nostril. You may also notice pawing at the face, sneezing fits, or signs of discomfort. If the discharge is tinged with blood or your dog seems distressed, a foreign body might be to blame. Removing these safely requires veterinary attention.

Nasal Tumors or Polyps

Although less common, growths such as nasal tumors or benign polyps can also cause a dog’s nose to run. These typically affect one nostril and may lead to thick or bloody discharge. Older dogs are more likely to develop nasal tumors, though age is not the only factor. Dogs with nasal growths might also have noisy breathing, facial swelling, or a noticeable decline in overall health. If you’re repeatedly noticing your dog’s nose is runny on one side, and the symptoms persist, an examination and imaging may be needed to reach a diagnosis.

When Should You Call Your Vet?

If your dog’s runny nose lasts more than a few days, or if it’s paired with changes in behavior, appetite, or energy level, it’s time to consult your veterinarian. Clear nasal discharge that comes and goes may not always indicate a problem, but any discharge that becomes thick, discolored, or smelly should not be ignored. Make note of whether the discharge comes from one or both nostrils, how long it has lasted, and whether any other symptoms have appeared. This information can help your vet identify the underlying cause and determine the best next steps.

At Companion Animal Hospital of Wakefield, we offer diagnostic tools and compassionate care to evaluate respiratory symptoms in dogs. We encourage pet owners in the Raleigh area to call us at (919) 488-5300 if they’re concerned.

What Your Vet Might Look For

When you bring your dog in for an exam, your veterinarian will take a detailed history and perform a thorough physical exam. If your dog’s nose is runny, the goal is to find out what’s causing the discharge and how it affects your dog’s overall health.

Diagnostic Testing

Depending on the case, your vet might recommend:

• Nasal swabs to test for bacteria or viruses
• Imaging, such as X-rays or CT scans, to view the nasal passages
• Bloodwork to evaluate systemic health
• Rhinoscopy, a minimally invasive procedure that allows visual inspection of the nasal cavity

These tools help determine whether your dog’s nasal discharge is due to infection, inflammation, obstruction, or something more serious.

Treatment Recommendations

Once the cause has been identified, your veterinarian can develop a treatment plan tailored to your dog’s needs. This may include medications, environmental changes, or further investigation if a mass or structural issue is suspected. Please avoid trying to diagnose or treat your dog’s runny nose at home. While it may seem minor, nasal discharge can sometimes signal deeper health concerns. Let a professional evaluate the situation and guide you through the next steps.

Helping Dogs Feel Better Starts with a Conversation

If you’ve found yourself asking, “Why is my dog’s nose runny?” more than once, you’re doing the right thing by paying attention. Nasal discharge may be one of the first signs that something isn’t quite right. While some causes are mild and manageable, others require more thorough investigation and care. The veterinary team at Companion Animal Hospital of Wakefield can help Raleigh pet owners get answers. Whether it’s seasonal allergies or something more complex, we’re ready to examine your dog’s symptoms and recommend a path forward. Call (919) 488-5300 to schedule a visit.