The reasons why cats pant with their mouths open:

1. The ambient temperature is too high. When the temperature of the environment where we raise cats is too high, it will cause the cat to have difficulty dissipating heat. Then the cat will open its mouth to speed up evaporation to help dissipate heat, which is similar to dogs.

2. Stress reactions such as fear and tension. Since cats are timid and suspicious creatures by nature, they are very prone to mouth breathing, shortness of breath, difficulty breathing, etc. when experiencing stress reactions.

3. Heart diseases. Cats with heart disease are likely to have blood circulation problems, leading to systemic hypoxia, which is manifested by mouth breathing.

4. Painful diseases.

5. The nasal cavity is blocked and breathing can only be achieved by opening the mouth.

6. Pleural effusion, ascites, diaphragmatic hernia and other diseases that can squeeze the lungs and cause difficulty in breathing.

7. Pulmonary edema, pericardial effusion and other intrathoracic organ diseases.

8. Other inflammations that can cause fever. Therefore, clinically, if you see a cat at home mouth breathing, it is recommended to seek medical treatment in time and carry out targeted treatment after a diagnosis is made.