Can slugs, snails or worms suffer?

I wasn't actually sure about the answer to this to start with, whether things like slugs and snails do actually feel pain. The way that the ... “New research published by Queens University Belfast Academic has shown that crabs don't just suffer pain, but they also remember it too. read more

Snails, oysters and slugs are all molluscs, yet oysters have no central nervous system. However, I have read some reports that nociceptors have been found in the gastropods Aplysia (a sea slug) and Helix (garden snails) have nociceptors and are capable of operant conditioning, so pain is not out of the question for these two gastropod groups. read more

You can't I'm sorry. The best you can do is create a good environment for birds who will eat them (the slugs die but you haven't killed them). If you can create a pond then this will attract frogs who will also eat slugs. read more