Natrual Selection in action... (Score 1)

Animals that are killed by the radiation leave a empty chair at the dinner table for those who are still alive. You'd have to find and count all the dead animals, too, to get an idea of how "safe" it is out there.

That they're able to breed faster than the radiation can kill them is... I don't know if that's better or worse, actually. I don't know that I'd use the word "encouraging." I'm thinking something like "gruesome."