TL;DR: Fast breathing while purring can mask respiratory distress or pain; monitor your cat for a resting respiratory rate over 40 breaths per minute and seek emergency care for open-mouth panting or blue gums.
Why is my cat breathing fast while purring?
It can be very concerning to see your cat’s chest moving rapidly while they seem to be happily purring. While purring is usually associated with contentment, cats also purr to self-soothe when they are in pain, stressed, or experiencing physical discomfort. This phenomenon can sometimes mask signs of respiratory distress, making it difficult for owners to tell if their pet is truly relaxed or struggling.
Is fast breathing while purring a veterinary emergency?
- Urgency Level: This behavior is considered a Medium Urgency level.
- Monitor Respiratory Rate: If your cat is breathing faster than 30 to 40 breaths per minute while resting, it may indicate tachypnea linked to heart disease, asthma, or fluid in the chest.
- Seek Emergency Care: Go to a vet immediately if fast breathing is accompanied by open-mouth panting, blue-tinged gums, or extreme lethargy.
How does recording a video of my cat’s breathing help the veterinarian?
- Capture Home Behavior: Cats often change their breathing patterns when stressed at the clinic; a video of them at home provides a more accurate representation.
- Visual Evidence: A clear video allows your veterinarian to observe respiratory effort, rhythm, and depth in a natural environment.
- Improved Diagnosis: This documentation is vital for accurate triage and determining the underlying cause of the fast breathing.
Clinical Context (Merck Veterinary Manual)
While purring is generally associated with contentment in cats, rapid breathing concurrent with purring is not typically normal and warrants investigation. Heart disease should be considered if physical examination reveals a rapid, slow, or irregular heart rate (not due to respiratory sinus arrhythmia), absence of respiratory sinus arrhythmia at rest, a gallop rhythm, a loud murmur, muffled heart sounds (in the absence of obesity), or rapid, feeble, or irregular arterial pulsations with pulse deficits. Increased respiratory sounds may suggest pulmonary edema, while decreased respiratory sounds may indicate pleural effusion. A normal sleeping respiratory rate (SRR) in cats is less than 40 breaths/min, with most being less than 30 breaths/min.
Chapter: Cardiology, Emergency, Neurology
Source: The Merck Veterinary Manual, 11th Edition (Page 118)