TL;DR: Panting in cats is a life-threatening medical emergency signaling severe respiratory or cardiovascular distress; seek immediate veterinary care for oxygen therapy and stabilization.
What does it mean if my cat is panting like a dog?
While dogs pant to cool down after exercise, it is very rare for a healthy cat to breathe with an open mouth. When a cat pants, it is typically a sign of severe respiratory distress or an underlying cardiovascular issue, indicating that your cat is working much harder than normal to move oxygen into their lungs and bloodstream.
Is it a medical emergency if my cat is panting?
- Treat open-mouth breathing as a high-urgency, critical medical emergency.
- Contact the nearest emergency veterinary clinic immediately.
- Do not wait for a scheduled appointment; immediate intervention is required for oxygen therapy and stabilization.
How can photos and videos help the vet triage my cat?
- Provide a short video of your cat’s breathing so the vet can assess the respiratory rate and abdominal effort.
- Capture your cat's posture to help the triage team determine the severity of the distress.
- Use visual information to help the clinic prepare necessary life-support equipment, such as an oxygen cage, before you arrive.
Clinical Context (Merck Veterinary Manual)
Compromised breathing in cats manifests as an increased respiratory rate and effort, followed by a change in respiratory pattern. Cats may sit crouched on all four limbs with the sternum slightly elevated. Open-mouth breathing and cyanosis indicate significant loss of pulmonary function and impending pulmonary arrest. Lung parenchymal disease causes rapid, shallow synchronous breathing, often with movement of the cupula. Thoracic auscultation may reveal louder than normal lung sounds, progressing to harsh sounds with moist crackles and rales over the affected lungs. Differential diagnoses include pneumonia (viral, parasitic, fungal, or bacterial), aspiration, pulmonary contusions, or hemoglobin abnormalities. Causes of respiratory compromise include pneumothorax, alveolar flooding (edema fluid or blood), severe bronchoconstriction, or brain-stem pathology affecting ventilation. Life-threatening airway pathology includes complete large airway obstruction (causing unconsciousness and apnea) and partial obstruction (causing noisy breathing, stridor or stertor, and cyanosis).
Chapter: Emergency, Respiratory
Source: The Merck Veterinary Manual, 11th Edition (Page 1663)