Sorry if this is old. This is my first time on /an/.>Parasitic flatworms (Leucochloridium paradoxum) attack innocent gastropods, and force the snails to feed themselves to birds - over and over.http://www.youtube.com/watch?v=EWB_COSUXMw
Yes, it is old, but anonymous forgives.
http://www.damninteresting.com/?p=53Zombie crabs are superior
http://youtube.com/watch?v=xu9bqt2OgFM enjoy your nightmares.
Shit. Just like Resident Evil 4.