Researchers have found compelling evidence that lobsters experience pain in ways similar to other mammals.
For years, scientists debated whether lobsters’ reactions to harmful stimuli were true signs of pain or simply automatic reflexes. To investigate, a team at Sweden’s University of Gothenburg studied how Norway lobsters responded when given pain relief.
In the experiment, the lobsters were exposed to electrical shocks—levels considered painful for humans. Untreated lobsters reacted by rapidly flipping their tails in an attempt to escape. But when others were given aspirin or exposed to lidocaine in the water, those escape behaviors disappeared.
This shift suggests their reactions are not just mechanical reflexes, but genuine responses to pain. As lead researcher Eleftherios Kasiouras explained, responding to painkillers during harmful experiences indicates that lobsters feel more than simple reflexes—they experience something closer to pain.


