Dreams involving animals, especially those that exhibit aggressive behavior, can often symbolize feelings of vulnerability or fear in waking life. In your dream, the rat attacking you may represent a situation or person that you perceive as a threat or that you feel is unjust. The fact that it attacks "bad people" might suggest you have concerns about morality or justice in your surroundings, possibly feeling overwhelmed by negativity or harmful influences.

The injuries to your arms and legs, especially the bleeding, could symbolize feelings of helplessness or being attacked emotionally or psychologically. It may indicate a fear of losing control or being hurt by someone or something you consider negative.

Consider reflecting on your current life situation. Are there any conflicts or challenges that make you feel vulnerable? Are there any relationships or environments that feel threatening? This dream may be urging you to confront these issues or to take steps to protect yourself.

If the dream leaves you feeling anxious, try to express those feelings through journaling or talking to someone you trust. Understanding these emotions can help you find a sense of empowerment and healing.