The reasons why kittens keep huffing:

1. Being threatened. After arriving in a strange environment and unable to adapt immediately, the kitten feels threatened. At this time, the kitten will make a huffing sound to intimidate the other party.

2. Heatstroke. Cats have poor heat dissipation ability. Once they are in a hot environment for a long time, they will suffer from heat stroke due to insufficient heat dissipation. During this period, they will be accompanied by panting with their mouths open.

3. Vigorous exercise. After a cat exercises a lot, its heartbeat speeds up and its body temperature rises. It will quickly restore its breathing stability by opening its mouth and breathing.

4. Suffering from disease. Cats will also open their mouths to breathe when they are deprived of oxygen. If this happens for a long time, a large part of it is due to serious diseases, such as heart disease, asthma, etc.

5. Injury. When a cat is injured and feels real pain, it may huff uncontrollably during daily activities.

Methods to deal with kittens that keep breathing:

1. Cool down and relieve the heat. Because of heat stroke or strenuous exercise, the cat can be taken to a cool and ventilated place to achieve the purpose of cooling down.

2. Strengthen interaction. You can interact with the cat appropriately and gradually establish a close relationship, such as feeding some snacks.

3. Keep your distance. A cat sighing at its owner means that it is sending a signal that it doesn't like you and doesn't want you to get close to it. You should keep a certain distance from the cat.

4. Send to hospital for treatment. If the situation is serious, the cat needs to be taken to a pet hospital for examination, and symptomatic treatment will be provided after the cause is found.

5. Gently comfort. You can move the object that threatens it elsewhere, and then gently stroke the cat's back to soothe it and calm it down.