Dog food as we know it today – that is, either crumbly bits of kibble packaged in bags and boxes or gloopy meat-based concoctions sealed into cans – was invented in 1860. Think about that for a moment. Our great-grandparents and great-great-grandparents raised dogs completely without the benefit of Purina. Before 1860, no one poured a pile of chow from a bag marked, Dog.” Everyone who had a dog knew what dogs ate and how to feed them. “