Footholds for survival.
D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D002369:Castration; D005260:Female; D005849:Gerbillinae; D007774:Lactation; D008297:Male; D010053:Ovary / Q000502:physiology; D011247:Pregnancy; D012629:Sebum; D012903:Smell; D013731:Territoriality; D013737:Testis / Q000502:physiology; D013739:Testosterone / Q000494:pharmacology
D013739:Testosterone