Compassion, by the pound

the long version

This study journeys from the earliest days of animal domestication to modern industrial farms. Delving into questions of ethics and animal sentience, the book use data from ingenious consumers' experiments conducted with real food, real money, and real animals to compare the costs and benefits of improving animal care. It shows how the economic approach to animal welfare raises new questions and ethical conundrums, as well as providing unique and counter-intuitive results.