Recently there have been a video of wild boars, nick named the radioactive boars of Fukushima, has been going around on the youtube. Although there is no reason to believe that the boars have any especial physical deformation (or superhero ability). It is still interesting that these animals can live in such a supposed toxic environment.
It seems people like to romanticize about the wild animal taking over previously civilized part of city. Particularly, in the wild life are some sort of mythical creatures like the boars or wolves. Here is a video of so-called radioactive wolves of Chernobyl: