Dream about black bull is a clue for the old friends or old flames that you have lost touch with over the years. You have lost your sense of security. You may need to organize your thoughts and sort out your values. It signals rejected or unwanted aspects of yourself. You are acknowledging your negative emotions.
Black bull dream is unfortunately an admonition for for you to recognize and acknowledge some repressing feelings. You are being overly defensive. You are experiencing a conflict in a relationship or situation which is giving you much anxiety. This dream is your childish or juvenile behavior. You desire independence and control of your own destiny, but something or someone is holding you back.
If you dreamt about black bull:
You’re likely to have tremendous concentration that seems to have materialized out of nowhere. Use this to your advantage, because it may not last long. You’re usually blown from one thing to another like a leaf in the wind, and it’s hard for you to settle on one project or issue for an extended time. You may have to shut a few people out in order to finish some tasks, but that’s fine. Do what you have to do.