1. If a cat feels that the temperature is too hot, it will open its mouth. Cats do not have developed sweat glands and cannot dissipate heat well, so they will open their mouth to help themselves dissipate heat.

2. If the cat’s mouth is inflamed, it will keep its mouth open.

3. If the cat keeps opening its mouth, it may be caused by a dislocated jaw.

4. If the kitten also opens its mouth when suffering from respiratory diseases, the owner can take the kitten to the hospital for a physical examination to avoid delaying the condition.

5. The cat may be very frightened, causing it to open its mouth.

What to do if the kitten keeps opening its mouth:

1. If the kitten opens its mouth because of the hot weather, then the kitten must be cooled down in time and attention should be paid to opening the mouth. When using an air conditioner or electric fan, do not keep blowing it on the cat.

2. If cats suffer from respiratory diseases, the owner should provide them with adequate nutrition and take them to the pet hospital for treatment in time.

3. If the cat is frightened, it will keep opening its mouth to relieve its discomfort. The owner can stroke the cat's hair, accompany it, and slowly calm it down.

4. If the cat keeps opening its mouth, the owner should provide the cat with enough drinking water and move the cat to a cool and ventilated place.