1. Subconsciously warning: It may represent facing some kind of pressure or threat in real life. The dog bite in the dream is a warning, reminding the dreamer to pay attention to their own safety or mental health.
2. Interpersonal difficulties: Dogs sometimes symbolize friends or colleagues in dreams, being bitten may reflect problems or conflicts encountered by the dreamer in interpersonal relationships, while being bitten on the hand may indicate that this difficulty directly affects the dreamer's actions or abilities.
3. Emotional harm: Pain in dreams may represent emotional harm, and being bitten by a dog may suggest that the dreamer has experienced unhappiness or betrayal in their emotional life and needs to deal with these negative emotions.