[Pollard]

M = Mole = Meat Eaters Moles eat earthworms, grubs, and insects. As moles tunnel, they make visible raised tunnel ridges, volcano shaped mounds of soil, and have a closed tunnel system without an entrance hole

V = Vole = Vegetarian Voles eat roots, bulbs, seeds, bark and foliage. Voles have open entrance holes, and their tunnels are not raised ridges.

I definitely have raised soil ridges so I have moles - eating my earthworms. Wonderful.

[Diana in Wisconsin]

Well, there goes your ‘extra income stream’ selling worms to fishermen in the area! ;)