Fortunately, my analysis laid the groundwork for a solution: Researchers and breeders can intermix similar dogs to add genetic diversity. So far, they’ve mated the lundehund and Norwegian buhund, and the offspring really look like lundehunds, six toes and all. That’s how I got my new dog, Milo. He’s only a year old, so it’s too soon to say, but he doesn’t seem to have Aiko’s stomach problems. Purists oppose mixing purebreds, but producing happy, healthy dogs is more important than keeping all the right traits.