cloaca
Explicit Tag See Help: Ratings for more info. In many animals, including amphibians, reptiles, birds, invertebrates and even a few mammals, the digestive, urinary and genital tracts open into a single common chamber called the cloaca. The term is commonly used on e621 to refer to the external posterior opening of the orifice specifically, although this opening is more properly termed the "vent". Only tag cloaca when…