Cephalopods including octopuses, squids, and cuttlefish are used in neuroscience research, with growing recognition of their welfare needs in captive settings.
Cephalopod research welfare is advancing rapidly as evidence for their cognitive sophistication grows. Octopuses in barren laboratory environments show behavioral indicators of poor welfare including reduced exploration and stereotypic behavior. Providing environmental enrichment - complex objects, hiding places, appropriate lighting - significantly improves welfare outcomes in research settings. The EU's inclusion of cephalopods in animal research directive coverage reflects the scientific consensus that they require welfare protection. Applying 3Rs principles - replacement where possible, reduction in numbers, and refinement to minimize suffering - is increasingly required by funding bodies and ethics committees.