TL;DR: Rapid, shallow breathing in a resting cat is a medical concern requiring veterinary attention within hours, especially if it progresses to open-mouth panting or blue gums. Capturing a video of the behavior at home can help your vet accurately triage the situation.
What does rapid, shallow breathing look like in cats?
Rapid, shallow breathing, medically known as tachypnea, occurs when a cat’s respiratory rate exceeds the normal resting range of 16 to 40 breaths per minute. When a cat is lying down and relaxed, their breathing should be nearly effortless. If you notice the chest moving quickly and with little depth, it suggests the body is struggling to maintain oxygen levels or is reacting to internal distress, such as fluid in the lungs, heart disease, or pain.
Is rapid, shallow breathing in cats considered a medical emergency?
- Medium Urgency: Rapid breathing while resting is never normal and is often a precursor to a severe crisis; contact your veterinarian or emergency clinic within a few hours.
- Critical Emergency: Seek immediate intervention if your cat begins panting with an open mouth, develops a blue or purple tint to the gums, or becomes extremely lethargic.
Why should I record a video of my cat's breathing for the veterinarian?
- Overcome Masking: Cats often hide symptoms or change their breathing patterns due to the stress of travel, making home videos essential for accurate assessment.
- Visual Triage: A clear video allows the medical team to count the respiratory rate and observe specific chest muscle effort while the cat is relaxed.
- Accurate Assessment: Providing visual evidence helps the triage nurse or vet determine the severity of the distress before you even arrive at the clinic.
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. Labored, open-mouth breathing and cyanosis indicate significant loss of pulmonary function and impending pulmonary arrest. Pleural space disease causes asynchronous breathing, with muffled lung sounds over the affected regions. Lung parenchymal disease causes quiet, smooth breathing with the chest and abdominal wall moving in the same direction, and inspiration and expiration are equally labored. Severe small airway obstruction presents with labored breathing and an expiratory push of the diaphragm. In life-threatening situations, the animal is cyanotic, open-mouth breathing, collapsed, and asphyxiating. Common causes include anaphylactic reactions, asthma (cats), and bronchial obstruction from edema, mucus, exudates, or foreign material. Unconscious, apneic animals require immediate tracheal intubation.
Chapter: Emergency, Respiratory
Source: The Merck Veterinary Manual, 11th Edition (Page 1663)