Is that they can either have a cloaca or a genital slit in the fur fandom. x3 Sadly, though, most of them have the "default cock" (basically human cock) or have a sheath and external balls. o3o

Birds rarely have genital slits or cloacas, much less than Reptiles, which is understandable, I guess, since their bodies fit the sheath and balls thing more than reptiles do.. =w=