It does make sense that way.The last Ice Age killed most of the dinosaurs so a nuclear winter would probably have a similar effect.That does fit since most animals are a reasonable size but it still doesn't explain the super mutants . I think they were mentioned in Fallout Tactics , and something about being created in a lab post-apocalypse.
-forgot to quote , sorry (Response to post 178)
-forgot to quote , sorry (Response to post 178)