Simply seeing a bull in your dream peacefully grazing signifies that things will become rather positive from a financial prospective. You might be involved into a quite profitable deal.
If you are male and you see a white bull grazing this dream can mean that you will become a father in the upcoming months.
To see a herd of bulls grazing in the dream it signifies that great financial gain will be made by you largely due to your ingenuity and inventiveness. This dream can also point to a final realization of a profitable idea.
To dream that you are herding bulls it means that you things in your professional life will become less restricted. You might be promoted to a new position which will enable you to have more freedom and be less restrained in your choices.
To be attacked by a bull in your dream means that you will be threatened by someone in real life. This will likely be connected with your professional life and it will likely touch upon your financial earnings.
To kill a bull in your dream it means that you will have a conflict with your enemies at your workplace or in your professional life in general. Having this dream several times can mean that the conflict will be significant and that it might cost you significant financial earnings.
If you dream of a bull calf being born it means that you will get some rather significant inheritance that you will use very wisely.
Seeing a dead bull in your dream means that one source of earnings in your life will dry up. You will likely be forced to intensify your efforts in the professional life in order to cover up for the loss.