Bull Animal Mandala
The bull is usually related, in its solar sense, to the masculine, strength, the SUN, and KINGLY power. Horns are seen as the sun-bow, shooting its ray-arrows. Is a God to a great many ancient cultures.
But the bull can also be a lunar symbol, when ridden by a MOON goddess. In this context the bull usually has the meaning of the taming of masculine and animal nature. Its horn, in this case, are seen as a moon-shape. It is connected with humidity and rain. Together with the solar connotation, represents earth and the underworld, fertility and reincarnation, often connected with the wandering souls of the dead.