@TheCobbler,
Many pre-Bronze Age Neolithic cultures existed as far back as 7000 BC in Eastern Europe, Crete, Southern Turkey (Catal Hüyük, Anatolia), Egypt, Mesopotamia, and the Indus Valley. They seemed to have in common the worship of the goddess or the androgynous goddess/god and had various animal symbols such as the bull and cow, lion, and snake representing aspects of Moon and Sun, themselves, of course, representing the archetypes or elementary ideas of the psyche. Different geographical areas expressed these archetypes in different variations or local ideas. However, the bull and cow seem to have been held in religious esteem in many cultures including Old Europe, Southern turkey, Mesopotamia, Crete, and the Indus Valley, where cattle are still considered sacred.
I believe that bullfighting still practiced in Mexico and Spain directly stems from the bull worship of the Neolithic, though all religious significance has been lost. Likewise, remnants of the Goddess worship still persists in Catholicism as the Madonna.
And excellent work on the subject is,
The Myth of the Goddess: Evolution of an Image
by Anne Baring and Jules Cashford
Various works by Joseph Campbell are also useful on the subject. One I especially like is,
The Inner Reaches of Outer Space- Metaphor as Myth and as Religion