It is generally okay to be scratched by a pet dog and cause some blood. Especially healthy dogs that have been vaccinated on time will generally not be infected with diseases. Moreover, the rabies virus is usually spread through bites and scratches will not cause any disease. There will be problems. After being scratched by a dog, rinse it with running soapy water for ten minutes, and then apply iodine or iodophor to the wound for disinfection.