Insect farming is growing rapidly as a sustainable protein source, but welfare assessment frameworks for farmed insects are still in early development. Understanding what welfare means for insects is an active area of research.
Insect farming welfare occupies one of the most genuinely uncertain moral territories in animal welfare science. The evidence for insect sentience is much weaker than for vertebrates, but it is not zero: some insects show pain-avoidance learning, behavioral responses to tissue damage, and analgesic responsiveness that parallel vertebrate pain responses. The precautionary welfare principle suggests that where moral status is uncertain, the burden of proof should favor treating animals well rather than assuming they cannot suffer. For insect farming, this means developing kill methods that minimize potential suffering, avoiding stocking densities that appear aversive based on behavioral indicators, and continuing to invest in the underlying welfare science that will allow better-informed decisions.