TL;DR: Noisy breathing in cats suggests a partial airway obstruction and usually requires a veterinary exam within 24–48 hours, but gasping or blue gums are critical signs that need immediate emergency care.
What does it mean if my cat is making noisy breathing sounds?
Noisy breathing, medically known as stertor or stridor, occurs when airflow is partially obstructed in the upper or lower respiratory tracts. Unlike the rhythmic vibrations of a purr, these sounds may manifest as wheezing, whistling, or heavy snoring sounds while your cat is fully awake and active. It often indicates that the air is hitting resistance, which could be due to inflammation, mucus, or structural changes in the nasal passages or throat.
Is my cat’s noisy breathing considered a medical emergency?
- The urgency level for noisy breathing while awake is generally medium, meaning the symptom should not be ignored even if the cat is not in immediate distress.
- Closely monitor your cat's behavior and schedule a veterinary exam within 24–48 hours if the breathing is persistent or worsening.
- Seek immediate veterinary care if your cat displays open-mouth breathing, gasping, or has a blue or pale tint to their gums, as these are signs of a critical emergency.
How can providing a photo or video help the vet triage my cat?
- Cats often hide symptoms or change their breathing patterns due to stress in a clinic, so a home recording provides a more accurate representation.
- A video allows the vet to observe the specific effort of the chest and hear the exact pitch of the noise in a natural setting.
- This helps the medical team determine if the resistance is located in the nose, the back of the throat, or the lungs before the physical exam even begins.
Clinical Context (Merck Veterinary Manual)
Compromised breathing in cats manifests as an increased respiratory rate and effort, followed by a change in respiratory pattern and postural changes such as sitting crouched on all four limbs with the sternum slightly elevated. Obvious labored, open-mouth breathing and changes in mucous membrane color (gray and/or blue [cyanosis]) indicate significant loss of pulmonary function and impending pulmonary arrest. The location of the pathology, pleural space or parenchymal disease, can be determined by careful observation of the breathing pattern and auscultation of the thorax, which will direct resuscitative efforts. Pleural space disease causes asynchronous breathing, while lung parenchymal disease causes quiet, smooth breathing with synchronous chest and abdominal wall movement, and equally labored inspiration and expiration, unless concurrent small airway edema or constriction adds an expiratory push. Thoracic auscultation reveals muffled lung sounds over affected regions in pleural space disease and louder than normal lung sounds that progress to harsh sounds with moist crackles and rales in parenchymal disease.
Chapter: Emergency, Respiratory
Source: The Merck Veterinary Manual, 11th Edition (Page 1663)