Dreams involving pets, especially ones that turn aggressive, can often symbolize feelings of betrayal, fear, or anxiety in your waking life. Your cat, a creature typically associated with companionship and comfort, becoming violent might represent a situation or relationship that you feel is turning against you unexpectedly.

Your reaction of fighting back could indicate a desire to regain control in a situation where you feel threatened or overwhelmed. The subsequent fear your cat displayed towards you might reflect your worry about the consequences of your actions or how your reactions might affect those around you.

The bloody nose upon waking could be a physical manifestation of stress or trauma, possibly reflecting how deeply this dream affected you emotionally. It might be helpful to explore any current stresses or conflicts in your life that could be contributing to these feelings.

Consider taking some time to reflect on your relationships and any underlying anxieties you may have. Journaling about your feelings or discussing them with a trusted friend could provide further clarity and help you process any emotions that have surfaced due to this dream.