Octopuses, squid, and cuttlefish are now legally protected in research in the EU, reflecting growing evidence of their sophisticated cognition and welfare needs.
Cephalopod welfare science has advanced rapidly in recent years, revealing a level of cognitive sophistication that warrants serious welfare consideration. Octopuses demonstrate tool use, navigate mazes with spatial memory, and show behavioral flexibility suggesting rich subjective experience. The EU recognition of cephalopods in research protections reflects this evidence. Outside the EU, procedures on these animals often proceed without the welfare considerations applied to vertebrates.