It is a little late to vaccinate the dog at four months. Generally, maternal antibodies disappear around 1 month of age in dogs. Failure to vaccinate dogs between 1 and 4 months of age may increase the risk of the dog contracting infectious diseases. Therefore, it is generally recommended that owners receive the first dose of vaccine to prevent infectious diseases after the dog is 45 days old, and then receive one shot every 21 days. After three consecutive shots, the owner can receive the rabies vaccine 7 days apart.

Precautions before vaccination for dogs:

1. Dogs can start to be vaccinated when they are over 45 days old. They need to go to the hospital for vaccination on time in strict accordance with the doctor's instructions. .

2. Dogs can be vaccinated only if they are healthy, have no viral, bacterial infection or trauma or other diseases, and are not pregnant.

3. You must go to a regular animal hospital to get vaccinated by a professional veterinarian, so as to ensure the effectiveness of the vaccine.