I struggle to differentiate living things by anything other than proportions. We’re all just complicated things doing stuff to make more complicated things ad infinitum.
Avoid stimulus that is harmful, seek helpful stimulus. Pain, pleasure.
How much of a stretch would it be to just assume most multicellular organisms are capable of feeling something at least approximating pain?
Depends on your position on the definition of pain and its relevance to rights.
A general community to post things about insects
For more specific communities:
Isopods and Myriapods: [email protected]
A community for our eight-legged friends: [email protected]