Canine & Feline Influenza: Coughing, PCR Testing & Care Essentials [2025]
Canine and feline influenza is a viral respiratory infection that causes coughing, nasal discharge, and fever. Most cases are self-limiting, but young or immunocompromised animals may deteriorate. Supportive care is the primary treatment; vaccination can help prevent infection.
When to See a Vet
Seek Emergency Care Immediately
- •Open-mouth breathing with visibly labored respiration
- •Persistent lethargy with no response to stimulation
- •Gums or oral mucous membranes turning purple or pale
Schedule a Clinic Visit Soon (within 24–72 hours)
- •Persistent or frequent intermittent coughing
- •Louder breathing sounds or noticeable wheezing
- •Reduced alertness with a significant drop in activity level
01What symptoms indicate something is wrong?
Canine and feline influenza primarily affects the respiratory tract. Common symptoms include coughing, nasal discharge, and changes in energy or appetite, ranging from mild to severe.
- Persistent or intermittent coughing, sometimes with a change in sound
- Faster breathing or wheezing, with reduced exercise tolerance
- Nasal discharge, sneezing, or increased nasal secretions
- Lethargy, reduced activity, or excessive sleepiness
- Decreased appetite or short-term weight change
Seek emergency care immediately if you notice the following symptoms:
- ⚠️ Rapid breathing with open-mouth breathing or labored respiration
- ⚠️ Persistent lethargy with minimal response to stimulation
- ⚠️ Noticeably purple or pale gums or oral mucous membranes
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02How to assess the situation at home? Key observations and criteria for emergency care
Monitoring and recording symptom changes at home helps your vet assess the condition and track your pet's recovery.
- Record the frequency, timing, and pattern of coughing episodes
- Observe and note changes in energy level and activity
- Track appetite, water intake, and weight trends
- Monitor bathroom habits and watch for any abnormal discharge
- Use your phone to record video of coughing and breathing for reference
03How will the vet make a diagnosis? Common tests and examinations
At the clinic, the vet will start with a physical examination and may order laboratory and imaging tests to confirm the cause and assess severity.
Physical examination
auscultation, assessment of respiratory rate and breath sounds
Complete blood count (CBC)
evaluating changes in white blood cells and signs of infection
PCR or nasal swab testing
identifying the specific viral pathogen
Blood chemistry panel
assessing liver, kidney, and other organ function
Chest imaging (X-ray or CT)
evaluating lung or airway involvement
04How should treatment and care be managed after diagnosis? Medications, dietary adjustments, and care guide
Treatment depends on the severity of the condition. Regular follow-up visits are needed to monitor breathing and overall recovery, and further tests should be arranged as directed by your vet.
- The vet will determine medications and supportive care based on examination results
- Schedule regular follow-up visits to track respiratory status and clinical improvement
- Keep your pet isolated at home and ensure good air circulation and a comfortable temperature
- Provide easily digestible food and ensure adequate fluid intake
- Follow-up blood tests or imaging may be arranged to confirm recovery if needed
05What should you prepare before the vet visit? Key information to help your vet quickly identify the cause
This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.