[quote=@Stabby]
<Snipped quote by Webmaster>

From what I've seen, it's unlikely since what ever mutated them is likely the same thing that destroyed the previous civilization. Heck, the fact that some of these poor things lived long enough to try reproducing and that some of them were successful is both incredible and horrible.
[/quote]

There must have been a lot of animals affected by that for there to be any who survived.