1. Subconsciously warning: Dreaming of a dog biting someone may represent your subconscious vigilance towards a certain danger or bad behavior, reminding you to pay attention to preventing or avoiding conflicts with certain people or things in real life.
2. The release of emotional repression: Dogs sometimes symbolize loyalty and protection in dreams, but biting behavior may reflect your inner suppression of certain emotions or pressures. This type of dream may be a way for you to release emotional dissatisfaction or anger.
3. Metaphors of interpersonal relationships: The dog biting someone in a dream may also symbolize your feelings of disharmony or conflict in the interpersonal relationships around you. It may imply that you feel certain people are hurting you or someone you care about in real life, or that you are worried that your actions may unintentionally harm others.