Talk:Miia/@comment-24.48.221.20-20160427000536/@comment-26814876-20160524232609

From google:

Cloaca, (Latin: “sewer”), in vertebrates, common chamber and outlet into which the intestinal, urinary, and genital tracts open. It is present in amphibians, reptiles, birds, elasmobranch fishes (such as sharks), and monotremes. - www.britannica.com/science/cloaca

In otherwise it's essentially a type of vagina in certain animals.