You still need an injection, so that the inflammation can be cured quickly. Trembling is normal for two reasons. One is psychological factors. The other is that the wound has not healed, which is very painful. It is suggested that the dog sleep on his back, touch him more and communicate with him. Don't make him afraid that he needs you most at this time. In addition, the dog has a strong vitality, and it will be fine if you refuel. It is also useful to give the dog something he likes, such as cooking lean porridge and putting some anti-inflammatory drugs.