Board Thread:Off Topic/@comment-4659579-20130915082315/@comment-80.216.217.27-20131213152828

And Argonian females have breasts because (IRL human) females have breasts, and to make it obvious they are the female of the the particular species.

http://tvtropes.org/pmwiki/pmwiki.php/Main/NonMammalMammaries

"Regardless of this, artists tend to oversize the mammaries of characters that do have them, or put them in places where they don't belong. Prominent breasts, or lack thereof, is one of the simplest instinctive  visual cues  for hominids. Giving all female animals big boobs, or at least a body shape that mimics them, allows for distinction between the sexes without adding  glaringly obvious costume tags, a wasp waist, or the more  bizarre gender-specific characteristics in some other animals. Of course,  Fanservice may sometimes be enough reason to draw large breasts."