It is okay to scratch the skin slightly due to dog nail scratches, because there is no rabies virus on dog nails, so if you are scratched and there is no bleeding, you will not be infected with rabies. You only need to rinse the wound with running water for ten minutes. Then apply iodine for disinfection. Domestic dogs generally do not carry rabies virus. If they are scratched by stray dogs, it is best to go to the hospital for vaccination.