SemenSemen AnalysisInfertility, MaleSperm CountSpermatozoaAsthenozoospermiaEjaculationSpermatoceleOligospermiaVaricoceleSemen PreservationSperm MotilityInsemination, ArtificialFertilitySexual Behavior, AnimalGryllidaeCryopreservationAcinonyxTestisVasectomyMasturbationAntelopesSeminal Vesicle Secretory ProteinsCopulationAcrosomeSeminal VesiclesMating Preference, AnimalSpermatogenesisAndrologyEjaculatory DuctsAnimals, ZooGenitalia, MaleFertilizationSeminal Plasma ProteinsReproductionSperm RetrievalScrotumSperm HeadSperm AgglutinationCarnivoraEpididymisSperm-Ovum InteractionsSexual AbstinenceAzoospermiaSperm CapacitationTestosteroneInsemination, Artificial, HomologousCryoprotective AgentsHEPESAcrosome ReactionSperm MidpieceLibidoSperm TransportCompetitive BehaviorPoeciliaFertilization in VitroFreezingInseminationGenital Diseases, MaleSpecimen HandlingGenitalia, FemaleEgg YolkBottle-Nosed DolphinGenes, Y-LinkedPregnancySperm Injections, IntracytoplasmicPregnancy RateSpermatidsElephantsUrsidaeSperm TailSperm BanksSwineBeetlesEndangered SpeciesAntlersSexual MaturationCattleKlinefelter SyndromeTime FactorsSex Ratio