Earthworms form herds, make group decisions

This news is a little old, but irregardless, it creeps me out (most likely due to the subject itself). From the BBC:

Earthworms form herds and make "group decisions", scientists have discovered.

The earthworms use touch to communicate and influence each other's behaviour, according to research published in the journal Ethology.

By doing so the worms collectively decide to travel in the same direction as part of a single herd.

The striking behaviour, found in the earthworm Eisenia fetida, is the first time that any type of worm, or annelid, has been shown to form active herds.

You can read more here.