Because of its great fertility, the hare is associated with sex and, by extension, the female genitals. On the other hand, it is also considered a messenger of the unconscious and the weak but astute part of your personality, that which is found on the edge between conscious and unconscious.
Hares have always been considered figures of misfortune because of the popular belief that they were witches in disguise. Similarly, if a pregnant woman has this dream it meant that her child would have a cleft lip. Nevertheless, there are dream oracles that insist that a hare approaching you portends good luck.... The Big Dictionary of Dreams