Talk:Orthus/@comment-74.4.242.40-20130829113733/@comment-12623700-20130907235545

Wikpedia;

In  Greek mythology,  Orthrus ( Orthros) or  Orthus ( Orthos) ( Greek:  Ὄρθρος; Ὄρθος ) was a two-headed  dog and a doublet ("brother") of  Cerberus, both whelped by the  chthonic monsters  Echidna and  Typhon.