MDMA Makes Octopuses Want to Mingle, Too
After waiting several hours, they soaked the octopuses in a MDMA bath for 10 minutes, washed them off with saline, then returned them to the partitioned tank for 30 minutes.
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After a dose of MDMA, the octopuses spent much more time with other octopuses, of both sexes, than before. This is markedly unusual behavior for the creatures, who normally stick to themselves, and the researchers suggest it could be because social behavior that's normally suppressed was being expressed. They were also observed making "slow, voluntary, non-stereotypical, semi-purposeful movements" after being marinated in MDMA, something the researchers think might also be an example of normally repressed behavior coming out.