Too Long For Sex? For Beetles, The Right Level of Stiffness Is the Key

»»Too Long For Sex? For Beetles, The Right Level of Stiffness Is the Key

With penises as long as their bodies, successful mating for these beetles lies on the penile stiffness

By | 2016-11-29T02:40:45+00:00 July 18, 2016|Categories: |Tags: |0 Comments

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