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Female Octopus Behavior.
Female octopuses undergo remarkable behavioral changes following reproduction. Sexually mature, non-mated octopuses are active predators. In the first stage of maternal brooding, feeding females remain den-bound even as they capture prey. Brooding females then begin fasting. In the last stage before death, females in decline exhibit signs of precipitate organismal senescence, including over-grooming, prolonged periods outside of the den, and self-destructive behaviors.

Multiple optic gland signaling pathways implicated in octopus maternal behaviors and death

Z. Yan Wang, and Clifton W. Ragsdale

Journal of Experimental Biology 2018. 221:None-None; doi: 10.1242/jeb.185751