If you dream of cows or calves, the meaning depends on whether you are in control of them or not. If you see them in pastures, or you are herding them, it could mean success and good luck for your future. However, if they are chasing you, it might mean that your enemies are trying to undermine your efforts. It is often considered bad luck to dream of a black cow, and it may mean problems at your work or in your relationships.