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Sacrificial animals

Ancient Greek and Roman religion distinguished between animals that were sacred to a deity and those that were prescribed as the correct sacrificial offerings for the god. Wild animals might be viewed as already belonging to the god to whom they were sacred, or at least not owned by human beings and therefore not theirs to give. Since sacrificial meat was eaten at a banquet after the gods received their portion – mainly the entrails (exta) – it follows that the animals sacrificed were most often, though not always, domestic animals normally part of the Roman diet. Gods often received castrated male animals as sacrifices, and the goddesses female victims; Mars, however, regularly received intact males. Mars did receive oxen under a few of his cult titles, such as Mars Grabovius, but the usual offering was the bull, singly, in multiples, or in combination with other animals.

The two most distinctive animal sacrifices made to Mars were the suovetaurilia, a triple offering of a pig (sus), ram (ovis) and bull (taurus), and the October Horse, the only horse sacrifice known to have been carried out in ancient Rome and a rare instance of a victim the Romans considered inedible.