Witherok is one of the Dark Realms. Every living thing has adapted to having no water or sunlight here.
Witherok has no water whatsoever, and is forever pitch black, for no sunlight reaches it.
Only beasts are known to live here.
Dark creatures are known to live here, and the dragons are only dark and poison dragons. Cerberus, Cyprus, Black Phoenix, Dragons, Corrupt Unicorns, Black Pegasi (plural for Pegasus) and a black wolf that is thought to be related to Fenrir.