I was really not sure about it, but... it did seem like a good idea.
A research of Jonas Hamesol, centered around keeping separated body parts alive, clean and in contact with eachother, seemed to check out, at least in theory.
Small-scaled...
Autocloacalingus, Autofellatio, Dragon, Dragonborn, Dullahan, Eggplay, Headless, Hemipenis, Herm, Herm/herm, Hermaphrodite, Oviposition, Three heads, decapitation, hydra, ovipositor