The precursors of rabies are as follows: 1. 2-10 days before the onset of the disease, the patient may experience narcolepsy, weakness and discomfort, muscle aches, severe head pain, and a fever, which is mainly low. 2. There may also be an inconspicuous tightening of the muscles in the throat, but not muscle spasms. This muscle tightness can be aggravated especially after being blown by wind, seeing light and hearing abnormal sounds.3. The numbness, scratching and tingling sensation can occur in the wound area of a dog bite, and in severe cases, there may be a local ant crawling sensation, which is caused by the viral reproduction of the wound. So once scratched or bitten by an animal, you should go to the hospital to get rabies vaccine in time to avoid the possibility of having rabies to the greatest extent possible.