The animal-control officer loaded the dogs, one by one, into the death chamber. Four or five were facing their final moments of life as Cody Berry did what he had to do. 'It’s the toughest part of the job,' said Berry, who has spent the last five months working for the Animal Control Department in Florence, Alabama. Berry turned the key and pressed a button. A light came on, and carbon monoxide seeped into the chamber. Unnamed and unwanted, the young beagle mix was left anonymously in a drop box outside an Alabama pound. His life was supposed to end...