Animals most often represent that aspect of ourselves, or parts of our personality, that are present in our ordinary life. It is generally given that the more primitive the animal then the more primitive or deeper the layer of consciousness that represents. To dream of being bitten by an animal may be a manifestation of a fear of animals. What the animal is doing in the dream is also very important, if say, a pig is dancing, then maybe that means that the side of you that likes to over indulge is very happy with that. But if the pig were crying then that might indicate an inner urge to curb and over indulge in habit.