analanal_penetrationanatomically_correctanatomically_correct_genitaliaanatomically_correct_penisanimal_genitaliaanimal_penisanthrobatbat_earsbat_wingschiropteran_penisduofaeseirenflyingflying_foxflying_sexgenitalshermes_(eyegis-garr)malemale/malemammalmatarimegabatmembrane_(anatomy)membranous_wingspenetrationpenissexsize_differencespectacled_flying_foxwings