The elite-run institutions (temples and palaces) of Bronze Age societies sought to maximize the production of storable, taxable, and tradable agricultural commodities—especially grain and wool. This brought the secondary products revolution to full fruition and solidified the transformation of cattle, sheep, and goats into animals that embodied wealth. Later this privilege extended to equids for their role in warfare. While institutional forms of wealth excluded pigs, urbanism offered a new and ideal ecological niche for pig husbandry. Pigs became especially important among the urban lower classes, perhaps as a type of “informal economy.” Yet in regions without large cities or extant traditions of eating pork, pig husbandry failed to thrive. The Levant, in particular, saw the gradual erosion of pig husbandry in favor of wealth-bearing livestock husbandry. At the same time, pigs’ ritual roles began to shift. Whereas once the sacrifice of swine was thought to ensure fertility, communication with the dead, and the absolution of sin, by the Late Bronze Age pigs connoted impurity.