rationalskepticism.org

I would think (not entirely sure if this is kosher science) that isolated groups would more readily develop the genetic uniqueness of race in species with large amounts of variation. So we might find that race is more common in other species. Humans have a small amount of variation, relatively speaking.

It all comes down down to the gene map for each particular species. If we can find distinct groups with unique genetic profiles, we've found race.

I'm afraid I don't know any details about wild dogs or dingos, or anything except humans.