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[–]MezozoicGaygay male 5 insightful - 3 fun5 insightful - 2 fun6 insightful - 3 fun -  (0 children)

There are fishes that can change their sex on demand, there are full-female lesbian lizards, there are animals that reproduce in asexual way by just cutting part of themselves (sea stars). There are insects who reproduce only from one hive-queen, there are insects when male dies after finishing sex act, there are octopuses that are shooting "penis" into female from the distance, there are octopuses that can change any their "hand" into penis on demand.

However, what it all has to do with mammals (and especially humans), who have only two sexes and are reproducing same way among all species?