A badger can be seen in the strawberry patch by the farm. It looks mostly like an ordinary badger, but maybe half again as big. Those very familiar with the species would quickly see that this specimen looks slightly....off. Limbs shaped slightly differently, head maybe a touch too big, snout not quite the right proportions. Nothing that absolutely screams 'something's wrong', but enough to wonder what the fur's hiding.

The badger seems to be looking for someone, going up on its hind legs briefly and glancing around before dropping back to all fours and galumphing along again.

Don't human beings need sunlight to survive? It doesn't seem like there'd be a whole lot of it underground.

...so how do you turn the walls off?