Communism

Yeah, that was already mentioned by other posters. But if you mention the livestock, it's a neat point to remind that peasants, both medieval and later ones literally lived with their animals especially in winter. In the same room. Chickens, sheep, goats, cows, pigs. And those weren't your average cute pygmy piglets people keep as pets, pigs were more like wild hogs and there is terribly long list of known cases where pigs assaulted humans and even killed and and devoured weak people and children. Anyone still want to go back to the bucolic medieval life?