What bug does not fly?
What bug does not fly? Fleas, lice, silverfish, and firebrats are the only truly wingless insect groups that most of us are familiar with. Most adult insects have two pairs of wings, but they're not always visible.
Do insects feel pain?
Scholars have long recognised that the survival value of pain means many animals experience it, supposedly with the exception of insects. But we surveyed more than 300 scientific studies and found evidence that at least some insects feel pain. Other insects, meanwhile, haven't been studied in enough detail yet.