Dogs are in. New homes take in millions of dogs in a typical year, but with the pandemic keeping people at home and in search of companionship, a canine craze has sunk its teeth into the United States. For dog rescue organizations, keeping up with consumer demand has been a challenge. “Rescue dogs”—extremely popular among consumers as “an easy way to take feel-good action”—usually refer to dogs adopted from nonprofit organizations that see their mission as one of rescuing dogs from breeders, kill-shelters, or inhumane conditions. These groups often rely on donations and internet fundraising to sustain their work. Some rescue groups focus on a specific breed. But various animal rights advocacy groups, such as the Humane Society, decry wh...