I have had female dogs in the past and from what I can remember their vulva was located immidiately below their anus. In RUby my yorkie it is not this way hers seems to be a lot lower to the point were it isn't really visible from behind. Is this normal. Can you tell my if your girls are this way and if you haven't noticed please go check

and let me know. I plan to breed her but i was intrigued by this and am not sure if thats fine. Please let me know about all your girls.