Parade of the Fat Ox at the Paris Carnival

The Parade of the Fat Ox, also referred to as the "Festival of the Fat Ox," "Cavalcade of the Fat Ox," "Festival of the Town Ox" (paraded through the city), or "Festival of the Violled Ox" (paraded to the sound of the viol or hurdy-gurdy), is an ancient festive tradition held during the Paris Carnival. It involves Parisian butchers or butcher boys, often adorned in costumes representing savages, sacrificers, or victims, solemnly parading one or more decorated fat oxen accompanied by music.

Source: Wikipedia — Parade of the Fat Ox at the Paris Carnival (CC BY-SA 4.0)