Crabs are now recognized as sentient under UK law, with growing evidence supporting pain experience and increasing focus on humane handling and killing.
Crab welfare is an area of rapidly evolving science and regulation. Live boiling causes prolonged aversive experience in animals now recognized by law as sentient. Evidence from trade-off experiments, where crabs accept reduced predator shelter in exchange for escape from electrical stimulation, strongly suggests aversive experience beyond simple reflexive response. Humane killing methods including electrical stunning followed by mechanical destruction of the nervous system are available for commercial processors. Domestic live boiling represents the largest unregulated welfare issue for crabs. UK Government was required to consider crab welfare in policy following the 2022 Act.