Understanding the Causes of Your Chihuahua Puppy's Runny Nose and When to Worry
- Julia Polansky
- May 4
- 4 min read
Discover Why Your Puppy's Nose Is Running! The Ultimate Guide for Dog Owners

Understanding Nasal Discharge in Puppies
As a dog owner, it's not uncommon to notice various changes in your puppy's health and behavior, particularly when it comes to their nose. A running nose in Chihuahua puppies can be a cause for concern, and understanding the reasons behind this symptom is essential for ensuring your furry friend remains healthy and happy.
In this essential, we will explore the various factors that can contribute to a puppy's nose running, the potential underlying causes, and when it might be necessary to seek veterinary care.
Common Causes of Nasal Discharge
What the Color Tells You
Clear discharge is usually normal. But watch for:
• Milky - possible fungal infection
• Yellow - likely bacterial infection
• Bloody - could indicate injury or foreign object
Breed Matters
Flat-faced breeds like Chihuahuas ( as wellas Pugs, Bulldogs, Pekingese, Shih Tzus) often have runny noses and runny eyes due to their unique skull structure and prominent eyes. It's their special feature!
The Weather Detector
Puppies may get runny noses when weather changes (too cold, too sunny, too dry, too windy etc) - their nasal membranes are 100 times more sensitive than humans!
Tears Through the Nose
That's right! Dogs' tear ducts drain into their noses. So eye problems often can lead to clear nasal discharge too.
Nasal discharge in puppies can occur for several reasons, ranging from benign to more serious health concerns. Here are some of the most common causes:
1. Allergies
Just like humans, puppies can suffer from acute allergies that may lead to a runny nose. Allergens such as pollen, dust mites, mold, or certain foods (like eggs, strawberries) can trigger an allergic reaction, resulting in clear nasal discharge. Observing your puppy for other symptoms, such as itching, sneezing, or watery eyes, can help determine if allergies are the culprit.
2. Respiratory Infections
Puppies are particularly susceptible to respiratory infections and canine flu, which can manifest as a runny nose. Viral infections, such as canine parvovirus or kennel cough, can lead to inflammation inside nasal passages, causing exessive mucus production. If your puppy exhibits additional symptoms like coughing, lethargy, or a decreased appetite, it may be time to consult your veterinarian.
3. Foreign Objects
Curious puppies often explore their surroundings with their noses, which can sometimes lead to foreign objects becoming lodged in their nasal passages. This can cause irritation and excessive nasal discharge. If you suspect your puppy has something stuck in their nose, it's crucial to seek veterinary assistance promptly to avoid complications.
4. Environmental Factors
Environmental conditions can also play a significant role in nasal discharge. Exposure to smoke, strong room spray or parfume odors, or floor cleaning chemicals can irritate a puppy's sensitive nasal passages, resulting in a runny nose.
Additionally, changes in weather or humidity levels can affect your puppy's respiratory health.
Teething
If your puppy currently is 4 to 7 months old and has clear nasal discharge, it is likely due to teething. This transition from baby to adult teeth can be uncomfortable, with swollen gums and various symptoms. While clear nasal discharge is common, monitor their behavior and health for any changes.
When to Seek Veterinary Care
While a runny nose in puppies can often be harmless, certain signs indicate that veterinary care is necessary. If your puppy's nasal discharge is accompanied by any of the following symptoms, it's essential to consult a veterinarian:
- Persistent or worsening symptoms: If the nasal discharge continues for more than a few days or becomes more and more severe.
- Change in behavior: If your puppy is lethargic, refuses to eat, or shows signs of distress.
- Foul odor: A strong, unpleasant smell coming from your puppy's nose could indicate an mold infection.
- Blood in discharge: Any presence of blood in the nasal discharge should be evaluated by a veterinarian immediately.
Red Flags: When to See the Vet
Warning signs:
✔ Discharge from just one nostril (probably a foreign object or possibly polyps)
✔ Crusty buildup around nose (Fungal infection)
✔ Labored breathing (Pneumonia)
✔ Pawing at face (watch for Allergic reaction or possible Parasites infection)
Home Care Tips
What you can do before the vet visit:
Keep cleaning gently your Chihuahua nose with dry soft tissue or toilet paper in order to keep it clean and dry.
1. Saline solution - 1 tsp sea salt per cup of water, 2-3 drops on top of the nostrils 2-3 times daily
2. Chamomile tea - gently wipe nostrils and eyes with cooled tea
3. Gentle massage - dab a tiny bit (if no allergies!) on the nose bridge and massage gently
Fun Fact: .
Now go give that wet nose a loving tap (and maybe keep some tissues handy). 😉🐶
Conclusion In conclusion, a runny nose in your puppy can stem from various causes, ranging from allergies and infections to environmental irritants.
As a responsible dog owner, it's vital to monitor your puppy's overall health and behavior closely. If you notice any concerning symptoms or if the nasal discharge persists, do not hesitate to reach out to your veterinarian for a thorough examination and appropriate treatment. By staying informed and proactive, you can help ensure your puppy remains healthy and free from discomfort.
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