Dan Rodricks: Abandoned dogs and mostly happy endings

Everybody likes a happy ending, at least once in a while. So you will be pleased to hear that Katherine Carver’s book on abandoned dogs is full of happy endings — that is, lots of adoptions. Most of the dogs she photographed and profiled found new homes. But Carver’s book, “Abandoned: Chronicling the Journeys of Once-Forsaken Dogs,” is not all warm and fuzzy.