The key rule: cats don't pant
Dogs pant to regulate temperature and after exertion — this is normal. Cats do not. A cat breathing with their mouth open, panting, or visibly working to breathe is experiencing a medical emergency. There is no "wait and see" appropriate response to open-mouth breathing in a cat.
Even increased respiratory rate without obvious distress — a cat breathing at 50 breaths per minute at rest when 20 is normal — can be an early sign of serious underlying disease (most commonly heart disease) that warrants prompt evaluation.
- Breathing with their mouth open
- Breathing with their neck extended forward and elbows flared out
- Breathing with visible effort — sides heaving, belly moving more than usual
- Breathing rapidly at rest (more than 40 breaths per minute)
- Showing blue or gray gums or tongue
- Sudden extreme lethargy alongside any breathing change
- Coughing repeatedly, especially if producing frothy or bloody material
Transporting a cat in respiratory distress
How you transport your cat matters. Stress dramatically increases oxygen demand in an already compromised cat. The goal is to minimize handling and keep them as calm as possible:
- Place the cat in a carrier with the door at the top if possible — they can sit upright, which is easier to breathe than lying down
- Cover the carrier with a light cloth to reduce visual stimulation
- Keep the car cool and well-ventilated
- Drive smoothly and avoid sudden stops
- Call us at (469) 287-6767 so we can have oxygen ready at the door
Do not put a struggling cat into a carrier if it significantly worsens their breathing. In an extreme emergency, a towel-wrapped cat in a passenger lap with the window down is better than a crisis in the parking lot.
What we do first when a respiratory distress cat arrives
Cats in respiratory distress are triaged immediately. We minimize handling to reduce stress and oxygen demand. The cat is placed in an oxygen cage immediately — this alone can stabilize breathing rapidly. Once the cat is more stable, we perform a careful examination, chest X-rays, and often an ultrasound of the heart and chest. If there is fluid around the lungs, thoracentesis (draining the fluid) is often performed quickly as it produces rapid improvement. Treatment is then tailored to the specific diagnosis.
If your cat has been diagnosed with heart disease or has had previous respiratory issues, monitoring resting respiratory rate at home is one of the most valuable early warning tools available. A rate that is gradually climbing over several days, or that jumps above 40 in a previously stable cat, is a signal to call your vet before a crisis develops.