Serotonin: octopus love potion?

The article offers information on the scientific study of brain of the octopus to uncover the neurological mechanisms that regulate their social behavior Topics discussed include role of neurotransmitter serotonin in regulating social behavior by inhibiting aggression and spontaneous activity; information on the behavioral tests for octopus sociality; and finding of the theory that says octopuses become lovey-dovey during the mating season as a result of a boost in serotonergic activity.