Though I like these mutant ideas that have been posted on this thread, I’d just like to reiterate that the point of this thread was for more mundane mutant wildlife that follows the rules loosely established by Fallout 1 (and Fallout 2 to a lesser extent). Meaning, it seems to me that the animals that survived the war were mostly of the smaller burrowing/cave-dwelling type that subsequently grew exponentially in size due to radiation (ignoring the fact that it’s heavily implied that FEV is actually responsible for the increase in size and aggression of mutant wildlife...)
Not to say you can’t/shouldn’t post more “out there” ideas for mutants, but when I made this I was thinking more along the lines of giant gophers, groundhogs, prairie dogs and stuff like that. As far as Bethesda lore goes, there are plenty of burrowing species unique to the East Coast that they could’ve used instead of opting for the African naked mole rat. There are scorpions in the southeast however, so radscorpions fit there despite popular belief.
I like the idea of a Deathclaw-esque wolverine, but unfortunately those are mostly limited to Northern Canada so I don’t think they’d be found in the American East. A badger might be the closest analogue, but those would probably be limited to the Northeast on the East Coast (they’d be found in the West, though!)
Edit: Just thought of something. Skunks? Get sprayed by one and your Sneak is lowered massively.