Thanks for all the replies everyone . As for cutting them up... I just didn't expect them to be so HARD inside. I guess it's muscles or something, but I was expecting them to be a bit more like butter. That and the knife wasn't exceptionally sharp, so it involved some sawing. Then the front half went all zombie-crawly with it's guts hanging out like that android in Aliens ...

Perhaps it would be better to switch to nightcrawlers... I've not got any real preference. What is the protocol for feeding? How big a worm can he/she eat? How do i know when he/she's hungry?