Originally posted by XTazmanianDevilX:

Developers seem to be a bit lazy nowadays. For instance: Okay they've added caves an some bats. The thing is: bats drop leatherscraps....flying piglets? Wasted opportunity to add something new.

It is hard to tell honestly. The game is still being developed so we don't know if this is just some placeholder to add something later we get from the mistlands or something.

For now just think of it as an additional drop source that can be tweaked later.