It may be that the cat has heat stroke. In addition to opening its mouth to breathe, it is also accompanied by congestion of the eyelid edges and oral mucosa, and even drooling. Cats panting with their mouths open may be caused by a stress response. When a cat is too nervous or frightened, its heartbeat will accelerate, its body temperature will rise, etc. At this time, the cat will easily open its mouth and pant to adjust its mood.

Cats opening their mouths to pant may increase their body’s oxygen supply rate by opening their mouths. You should know that cats most often use their noses to breathe. When they are short of oxygen, they will use their mouths to help them breathe. If a cat is "panting" for several months in a row, there is a high probability that the cat has a serious disease: such as respiratory inflammation, cardiovascular disease, asthma, etc. It is best to take the cat for a check-up and then take targeted treatment.

If you find that your cat has mild heat stroke, you need to cool down the environment. Then dip a towel in cold water and wrap the cat's body to lower the temperature to below 39 degrees. You can also wrap ice cubes in a towel and place it on the cat's head and neck. Be careful not to let the temperature drop too fast, and always take a thermometer to measure (rectal temperature). Regardless of whether the cat is stable or not after ten minutes, the cat should be sent to the hospital for examination. The car should also be kept cool and the situation should be explained to the doctor after arriving at the hospital.