Bitten by the family dog does not necessarily have to play tetanus vaccine, but need to be vaccinated against rabies, the need for timely medical observation of the wound to decide, if there is a breakage and the wound is deep need to play tetanus vaccine; if the wound is superficial generally do not need to play tetanus vaccine. 1. Need to play: Whether bitten by their own dog or outside the dog, as long as the wound is too deep, the wound is too large, and there is bleeding, the wound is contaminated, you need to be inoculated with tetanus vaccine to prevent tetanus. 2. No need to fight:Although the dog bites, but the skin is not broken, there is no obvious wound, there is no bleeding, the skin is not contaminated, there is no possibility of infection of tetanus, do not need to be vaccinated against tetanus. In short, no matter what kind of dog bites you, you need to clean the wound and seek medical attention promptly. Carefully obey the doctor’s arrangements for treatment to prevent tetanus or rabies.