What are the common causes of rapid breathing in dogs and cats?

Rapid breathing can result from many causes including infection, foreign body inhalation, allergies, cardiac stress, or pleural effusion. Imaging and blood tests are needed for a definitive diagnosis — prompt veterinary assessment is recommended.

What information or documents should I prepare before the vet visit?

It is helpful to note when symptoms began and how they have changed, record video of coughing or wheezing, prepare a log of recent eating and elimination patterns, and bring your pet's current medication list and any previous imaging reports to speed up the diagnosis.

What tests does a vet typically perform to evaluate lung condition?

Common examinations include physical auscultation, complete blood count and biochemistry, chest X-ray or ultrasound, and when needed, cytology of airway samples or CT scanning to identify the cause and guide ongoing treatment.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

Disease Guide

Lung Disease in Dogs & Cats: Breathing Symptoms, Chest Imaging & Home Care Guide [2025]

Chest trauma causing pulmonary haemorrhage requires hospitalisation and monitoring

Take 1 minute to check the symptoms first

Last updated: 2026/01/06

Pethealthmap Editorial Team

Sources: AVMA, ACVIM, National Taiwan University Veterinary Hospital

When to See a Vet

Seek emergency care immediately

•Continuous open-mouth breathing with extreme respiratory distress
•Gums or tongue turning purple or noticeably pale
•Sudden collapse or brief loss of consciousness with no response

Schedule a clinic visit soon (within 24–72 hours)

•Resting respiratory rate persistently higher than normal
•Recurring or persistent dry cough or productive cough with phlegm
•Noticeable shortness of breath after exercise or sustained decrease in activity tolerance

01What Symptoms Indicate a Problem?

Lung problems commonly present as changes in breathing pattern, coughing, or reduced activity. Early detection helps speed up diagnosis and management.

Noticeable change in breathing rate or depth, including wheezing or rapid shallow breaths
More breathless than usual after exercise, reduced endurance, or easy fatigue
Persistent or intermittent coughing, which may be dry or productive
Needing to change position during sleep or rest to breathe more comfortably

Seek emergency care immediately if you notice the following symptoms:

⚠️ Continuous open-mouth breathing with extreme respiratory effort
⚠️ Gums or tongue turning purple or noticeably pale
⚠️ Sudden collapse or brief loss of consciousness with no response

02How to Assess Abnormal Signs at Home: Observation Tips & Emergency Criteria

Observing and recording details at home before your vet visit helps your veterinarian assess the condition faster and arrange appropriate tests.

Count and record breaths per minute at rest, and note when the rate increases
Use your phone to record video and audio of any wheezing or coughing episodes
Monitor for noticeable changes in alertness, appetite, and activity level
Measure and record water intake and body weight daily for several days
Observe frequency of urination and defecation, and check for abnormal discharge or traces of blood
If you suspect abnormal breathing, book a clinic visit that includes chest examination as soon as possible

03How Will the Vet Diagnose the Problem? Common Examination Procedures

Your vet will combine a physical examination with imaging and blood tests to assess lung function and identify the underlying cause.

General and thoracic auscultation

listening for murmurs, crackles, wheezes, or abnormal breath sounds

Complete blood count (CBC)

assessing for infection or inflammatory response

Blood biochemistry panel

evaluating organ function and metabolic status

Chest X-ray

evaluating lung markings, infiltrates, or thoracic changes

Thoracic ultrasound

assessing pleural effusion or peripheral lung lesions

Cytology

microscopic examination of tracheal wash or pleural fluid samples

Advanced imaging (CT scan)

used for complex or poorly localised lesions

04Treatment and Care After Diagnosis: Medications, Diet, and Home Care Guide

Treatment depends on the underlying cause and typically involves medication, supportive care, and regular follow-up with imaging and clinical monitoring.

Oxygen supplementation or other supportive care as needed to improve respiratory status
Targeted medication prescribed by the vet based on the type of infection or inflammation
Regular follow-up visits to monitor symptoms, body weight, and respiratory rate
Follow-up imaging scheduled based on test results to assess treatment response
Diet and weight management to reduce respiratory burden and support recovery
Home care includes avoiding strenuous activity and maintaining good air circulation
For complex cases, referral to a hospital with imaging facilities and respiratory specialists may be recommended

05What to Prepare Before Your Vet Visit: Key Information to Help Your Vet Quickly Identify the Cause

Write down when symptoms started and how they have changed over time (when they worsened or improved)

Bring video and audio recordings of coughing or wheezing episodes

Prepare a log of food intake, water consumption, and elimination patterns over the past few days

Bring a list of all current medications and supplements

Bring any previous test reports or chest imaging for comparison

Transport your pet in a stable carrier or on a lead to avoid stress or breathlessness during the journey

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.