A customer chows down at a Burger King in Springfield, Ill. The No. 3 fast-food chain has announced that all of its eggs and pork will come from cage- and crate-free chickens and pigs by 2017, raising the bar for its rivals. (Associated Press)

Photo by: Seth Perlman

A customer chows down at a Burger King in Springfield, Ill. The No. 3 fast-food chain has announced that all of its eggs and pork will come from cage- and crate-free chickens and pigs by 2017, raising the bar for its rivals. (Associated Press)