If you are bleeding from a cut from a dog’s tooth, you should rinse and disinfect the wound in time and then send it to the doctor for anti-rabies vaccination. Blood from a scratch from a dog’s tooth is a third-degree exposure in rabies prevention and treatment. There are three levels of exposure to rabies, and each level corresponds to a different treatment depending on the method of exposure and the degree of exposure. Tertiary exposure is defined as single or multiple penetrating wounds to the skin, scratches, licking of broken skin, or touching of open wounds or mucous membranes. The main treatment is to rinse the wound under running water for about 15 minutes, then disinfect the wound with alcohol or povidone-iodine, and take it to the doctor for rabies vaccination or serum. If the skin is scratched by the dog’s teeth and bleeds, it is important to seek medical attention promptly to avoid infection.