8 XXX : MonsterGirl

Provided the human makes use of the manticore's milk as nourishment, the process becomes self sustainable with the manticore recovering the lost fluids through semen extraction. It can be seen as a form of perpetual motion machine by monster girl researchers but its effectiveness hasn't been proven yet. [Source](http://www.pixiv.net/member_illust.php?mode=medium&illust_id=49983037)
Who milks the milker? That's the real question.
I'd cut off that tail twould i have the chance