Cattle are prominent in some religions and mythologies. As such, numerous peoples throughout the world have at one point in time honored bulls as sacred. In the Sumerian religion, Marduk is the "bull of Utu". In Hinduism, Shiva's steed is Nandi, the Bull. The sacred bull survives in the constellation Taurus. The bull, whether lunar as in Mesopotamia or solar as in India, is the subject of various other cultural and religious incarnations as well as modern mentions in New Age cultures.
In prehistoric art
Aurochs are depicted in many Paleolithic European cave paintings such as those found at Lascaux and Livernon in France. Their life force may have been thought to have magical qualities, for early carvings of the aurochs have also been found. The impressive and dangerous aurochs survived into the Iron Age in Anatolia and the Near East and were worshipped throughout that area as sacred animals; the earliest remnants of bull worship can be found at neolithic Çatalhöyük.
In antiquity
Mesopotamia
The Sumerian guardian deity called lamassu was depicted as hybrids with bodies of either winged bulls or lions and heads of human males. The motif of a winged animal with a human head is common to the Near East, first recorded in Ebla around 3000 BCE. The first distinct lamassu motif appeared in Assyria during the reign of Tiglath-Pileser II as a symbol of power.
"The human-headed winged bulls protective genies called shedu or lamassu, ... were placed as guardians at certain gates or doorways of the city and the palace. Symbols combining man, bull, and bird, they offered protection against enemies."
The bull was also associated with the storm and rain god Adad, Hadad or Iškur. The bull was his symbolic animal. He appeared bearded, often holding a club and thunderbolt while wearing a bull-horned headdress. Hadad was equated with the Greek god Zeus; the Roman god Jupiter, as Jupiter Dolichenus; the Indo-European Nasite Hittite storm-god Teshub; the Egyptian god Amun. When Enki distributed the destinies, he made Iškur inspector of the cosmos. In one litany, Iškur is proclaimed again and again as "great radiant bull, your name is heaven" and also called son of Anu, lord of Karkara; twin-brother of Enki, lord of abundance, lord who rides the storm, lion of heaven.
The Sumerian Epic of Gilgamesh depicts the killing by Gilgamesh and Enkidu of the Bull of Heaven as an act of defiance of the gods.
Egypt
In Ancient Egypt multiple sacred bulls were worshiped. A long succession of ritually perfect bulls were identified by the god's priests, housed in the temple for their lifetime, then embalmed and buried.
In the Memphite region, the Apis was seen as the embodiment of Ptah and later of Osiris. Some of the Apis bulls were buried in large sarcophagi in the underground vaults of the Serapeum of Saqqara, which was rediscovered by Auguste Mariette in 1851. Other sacred bulls were Mnevis of Heliopolis, the embodiment of Atum-Ra, and Buchis of Armant, linked with the gods Ra and Montu. The mother-cows of these animals were also revered.
Ka, in Egyptian, is both a religious concept of life-force/power and the word for bull. Andrew Gordon, an Egyptologist, and Calvin Schwabe, a veterinarian, argue that the origin of the ankh is related to two other signs of uncertain origin that often appear alongside it: the was-sceptre, representing "power" or "dominion", and the djed pillar, representing "stability". According to this hypothesis, the form of each sign is drawn from a part of the anatomy of a bull, like some other hieroglyphic signs that are known to be based on body parts of animals. In Egyptian belief semen was connected with life and, to some extent, with "power" or "dominion", and some texts indicate the Egyptians believed semen originated in the bones. Therefore, Calvin and Schwabe suggest the signs are based on parts of the bull's anatomy through which semen was thought to pass: the ankh is a thoracic vertebra, the djed is the sacrum and lumbar vertebrae, and the was is the dried penis of the bull.
Central Anatolia
We cannot recreate a specific context for the bull skulls with horns (bucrania) preserved in an 8th millennium BCE sanctuary at Çatalhöyük in Central Anatolia. The sacred bull of the Hattians, whose elaborate standards were found at Alaca Höyük alongside those of the sacred stag, survived in Hurrian and Hittite mythology as Seri and Hurri ("Day" and "Night"), the bulls who carried the weather god Teshub on their backs or in his chariot and grazed on the ruins of cities.