A mouse with a particularly high Nature, say 5. Would be able to wrack up Nature Passes rather easily. They could use it for any Ob 1 or 2 with little fear of taxing and if they did fail then the penalty would be pretty minimal. Not a bad thing because they would need to get 4 penalties to be bumped up to 6 anyways.
I would find it rather hilarious to play a wildmouse who’s constantly using his mousey nature to over come tasks which a more human approach would usually be taken.