{ "@context": "https://schema.org", "@type": "BlogPosting", "headline": "Cat breathing with its mouth open – why is it an emergency?", "description": "Is your cat breathing with its mouth open or panting? Learn why this symptom is an emergency and why your cat needs to be brought to the emergency clinic quickly. ", "datePublished": "May 17, 2026", }

Cat breathing with its mouth open – why is it an emergency?

Cat breathing with open mouth – why is it an emergency?

📞 Emergency and advice: 010 739 9130

📍 Sacrum Animal Hospital, Porttisuontie 13, 01200 Vantaa

Quick answer: A cat breathing with an open mouth is always a serious symptom. It can indicate lack of oxygen, heart or lung disease, pain, or shock. Contact an emergency veterinarian immediately.

Unlike dogs, cats do not normally pant. When a cat breathes with an open mouth, its breathing is often already significantly labored.

When to see a vet?

Contact immediately a veterinarian if any of the following apply:

  • The cat is breathing with an open mouth.
  • The cat is using its abdomen to pump air.
  • The gums are bluish or grey.
  • The cat is hunched and unable to rest.
  • The cat is apathetic or collapses and is limp.

What could be causing the symptom?

1. Cardiac-related breathing difficulty

Heart disease can cause fluid accumulation in the lungs.

2. Asthma or lung disease

Airway obstruction can quickly make it difficult to get oxygen.

3. Trauma or pain

A fall, impact, or severe pain can lead to breathing difficulties.

What can you do at home?

  • Keep your cat calm.
  • Do not try to examine it by force.
  • Call the emergency service before you leave so the clinic can prepare.

What happens at the vet?

In an emergency, a patient with breathing difficulties is assessed quickly. The cat is given supplemental oxygen and necessary further examinations are performed once the cat is in a stable condition.

Sacrum Animal Hospital can help

A cat breathing with its mouth open needs immediate veterinary assessment. Call the emergency service before you leave so the clinic can prepare for the situation. A professional will help assess whether it's an emergency or if an appointment can be scheduled.

📞 Emergency and advice: 010 739 9130

📍 Animal Hospital Sacrum, Porttisuontie 13, 01200 Vantaa

Canine diabetes (diabetes) — identify symptoms and start treatment

Does your dog drink a huge amount of water? It can be the first symptom of diabetes. Learn how to treat canine diabetes with insulin and diet.

27.01.2026
Blog Category
Dog diarrhea — home treatment and when to go to the vet?

Dog has diarrhea? Refer to the instructions for home care (feeding, lactic acid bacteria) and identify the signs when it is necessary to go to the doctor (blood, puppy, fatigue).

27.01.2026
Blog Category
What is the cause of a dog's lameness?

Does the dog limp on the front leg or the back leg? Read the vet's information pack for the most common causes: osteoarthritis, cruciate ligament injury, sprain or foreign object.

27.01.2026
Blog Category
Hyperthyroidism in cats — symptoms and treatment

Does your old cat lose weight even though it eats like a horse? It may be about hyperthyroidism. Learn more about this common disease in senior cats.

27.01.2026
Blog Category
Puppy's milk teeth not falling out – when are they removed?

Puppy's milk teeth not falling out? Read when retained deciduous teeth need to be removed and why they can cause bite and gum problems.

13.05.2026
Blog Category
Brachycephalic Dog's Breathing Difficulties – When is Surgery Needed?

Does your brachycephalic dog breathe heavily, snore, or get tired easily? Find out when BOAS symptoms require a veterinary evaluation.

14.05.2026
Blog Category