Hi! Not sure if this falls in your area of expertise, but in the last Dany chapter in DWD, it is proven Dany has menstruation. Is this worth looking into for Targs? This caught me by surprise when I came by it.

Sorry, but this is a hoax, based on some Daria fanfic from the late 90s. 

Just goes to show, you can’t trust everything you read on Tumblr.