Research into invertebrate pain and nociception is rapidly advancing - the policy implications for billions of farmed and research invertebrates are significant.
Invertebrate pain research has outpaced policy in most jurisdictions. The scientific evidence for crustacean sentience has strengthened dramatically while welfare regulation continues to treat them as non-sentient in most countries. The policy lag creates welfare harm at enormous scale - billions of crustaceans and insects are killed annually without any welfare consideration. The precautionary principle suggests welfare measures should precede certainty where stakes are high and evidence is suggestive. UK legislation represents a significant advance; advocacy for similar recognition internationally would protect potentially enormous numbers of sentient animals from preventable suffering.