Cerealia

thumb|upright|Seated Ceres from Emerita Augusta, present-day [[Mérida, Spain]] In ancient Roman religion, the Cerealia was the major festival celebrated for the grain goddess Ceres. It was held for seven days from mid- to late April. Various agricultural festivals were held in the "last half of April". The Cerealia celebrated the harvest, and may have begun on the 19th. Surviving descriptions of Rome's city festival of Ceres are presumably urban versions of an originally rustic, agricultural festival. In his treatise on agriculture, Cato the Elder recommends that farmers sacrifice a sow (porca praecidanea) to Ceres, before the harvest.

The Cerealia is listed on the oldest Roman calendars, and its institution in the city is attributed to the semi-legendary King Numa, in the earliest Regal period. The festival's archaic, agricultural nature is shown by a nighttime ritual described by Ovid. Blazing torches were tied to the tails of live foxes, who were released, possibly into the Circus Maximus. The origin and purpose of this ritual is unknown; it may have been intended to cleanse the growing crops and protect them from disease and vermin, or to add warmth and vitality to their growth. Ovid offers an aetiological explanation: long ago, at ancient Carleoli, a farm-boy caught a fox stealing chickens and tried to burn it alive. The fox escaped, ablaze; in its flight it set fire to the fields and their crops. As these were both sacred to Ceres, foxes are punished at her festival ever since.