Cephalopods including octopuses and cuttlefish are increasingly used in neuroscience and behavioral research, with new regulations recognizing their sentience and welfare needs.
Cephalopods in research require specialized welfare considerations. Their complex nervous systems mean standard vertebrate welfare frameworks do not fully apply. Anesthesia protocols using magnesium chloride or similar agents have been developed and validated. Housing in groups raises welfare concerns as they are typically solitary and cannibalistic. Individual housing denies social interaction but prevents aggression. Environmental enrichment including hiding places, objects for exploration, and prey for natural hunting behavior improves welfare significantly. The short lifespan of most cephalopod species (typically 1-2 years) and their semelparity means welfare impacts must be considered across the entire life cycle. UK regulations require project licenses for cephalopod research just as for vertebrate species.