A Traitor to His SpeciesGilded Age Americans lived cheek by jowl with free range animals. Cities and towns teemed with milk cows in dark tenement alleys, pigs rooting through garbage in the streets, geese and chickens harried by the packs of stray dogs that roamed the 19th century city. For all of American history, animals had been a ubiquitous and seemingly inevitable part of urban life, essential to sustaining a dense human population. As that population became ever