Animals Female Male classification animal 112 female 112 male 112 Argentina 71 anatomy and histology 52 Animal Distribution 46 growth, development and aging 45 animal dispersal 44 article 44 Animal Structures 36 animal structures 36 Organ Size 34 organ size 34 histology 33 Body Size 32 body size 32 physiology 29 Ecosystem 28 ecosystem 28 Taxonomy 27 parasitology 26 Beetles 20 beetle 18 genetics 18 Species Specificity 17 species difference 15