Like most other people here I'm not a real biologist either, but incest does not need to be a problem. Almost all dog-races are the result of lots and lots of i

Like most other people here I'm not a real biologist either, but incest does not need to be a problem. Almost all dog-races are the result of lots and lots of inbreeding. Ill effects of incest can be avoided with https://en.wikipedia.org/wiki/Genetic_purging https://en.wikipedia.org/wiki/Genetic_purging . In case there are only very few individuals left that's probably not what one wants to do, though.