There are many accidents in life. When we encounter such accidents, we need to know the first aid. The classmate recalled another nosebleed, and we applied cold water to her forehead, and she recovered. Although it is a trivial matter, it can reflect the importance of first aid.

Try to calm down and picture the attacking dog in your mind. If the dog attacks you and starts to run away, don't chase it-let it go, or it may continue to attack.