A little redness from a domesticated dog’s teeth is seen as a secondary exposure to rabies, and the wound should be disinfected and taken to the doctor for vaccination. Rabies is mainly due to being scratched or bitten by dogs and cats and other animals, thus infected with rabies virus, in order to facilitate the judgment of the wound, the rabies wound according to the contact and exposure of the situation is divided into three levels, note that not only bleeding will be infected with rabies, by the domesticated dog teeth touch a little red in line with the second level of exposure. Secondary exposure mainly refers to the bite wound, did not bleed, but there is broken skin or bare skin was lightly bit or scratched. For second-degree exposure, rinse with water immediately for about 15 minutes, then disinfect with iodine and send to the doctor for vaccination immediately. Being touched by the teeth of a domesticated dog a little and a little red to seek medical attention and follow medical advice to receive treatment to avoid delays.