Snails are farmed for escargot in large numbers, but their potential for pain and suffering has received minimal attention relative to other farmed animals.
Snail welfare sits at the edge of what welfare science can currently evaluate. Their nociceptors suggest some pain-response capacity, but whether this constitutes morally relevant suffering in the same sense as vertebrate pain is genuinely uncertain. The precautionary principle suggests that where uncertainty exists and the population scale is large (billions of snails farmed annually), minimum welfare standards should apply, particularly regarding killing methods. Boiling alive and salt dehydration may cause distress even if the subjective experience differs from vertebrate pain.