Having this dream shows that you may be under a lot of pressure (including emotions) in your life and study recently, almost to the limit. I hope you can find out the reason carefully and adjust it in time.
Of course, recently, someone has upset you, made you angry and made you unhappy, so there will be dagger stabbing and bleeding in your dreams, and even you will feel very anxious and helpless in your dreams. Pay attention to the villain when traveling and pay attention to traffic safety.
I usually have this dream when I am in a bad mood or too tired, and I feel the same way. Don't take it to heart, be careful in everything and be patient with others.
Dogs generally refer to short people.