Dog rescuers, flush with donations, buy animals from the breeders they scorn An effort that animal rescuers began more than a decade ago to buy dogs for $5 or $10 apiece from commercial breeders has become a nationwide shadow market that today sees some rescuers, fueled by Internet fundraising, paying breeders $5,000 or more for a single dog. The result is a river of rescue donations flowing from avowed dog saviors to the breeders, two groups that have long disparaged each other. The rescuers call many breeders heartless operators of inhumane “puppy mills” and work to ban the sale of...