The reasons why the cat's head trembles slightly:

1. It may be that the cat's head is hit by an external impact, which may damage the nerve center of the brain, causing slight shaking. It is recommended that the owner take the cat to the hospital in time. Pet hospital performs brain CT examination.

2. It may be that cats may have head shaking after being infected with ear mites and other parasites. It is recommended to give cats drugs containing nystatin as soon as possible.

3. It may be that the environment where the cat is located is relatively cold and there are insufficient thermal insulation measures. The cat may shiver due to the cold. The owner only needs to provide adequate thermal insulation measures.

4. It may be that the cat has symptoms of trembling and trembling due to stress reaction due to changing to a new environment. Owners should be careful to avoid changing the cat to a new environment.

5. Certain diseases may also cause symptoms of shivering in cats, such as infectious peritonitis, encephalitis, rabies, uremia, hypoglycemia, internal bleeding, hypocalcemia, etc. If the cat often appears With this kind of symptom, it is best to send the cat to a pet hospital for examination to confirm the cause and treat it promptly to avoid life-threatening consequences.