Greek underworld his duty was to bring these souls to the underworld and no one would persuade him to do otherwise. Cerberus (Kerberos), or the "Hell-Hound", is Hades' massive multi-headed (usually three-headed) dog with some descriptions stating that it also has a snake-headed tail and snake heads on its back and as its mane. Born from Echidna and Typhon, Cerberus guards the gate that serves as the entrance of the underworld. Cerberus' duty is to prevent dead people from leaving the underworld. Heracles once borrowed Cerberus as the final part of the Labours of Heracles. Orpheus once soothed it to sleep with
The Dog in the Manger the grain, but who nevertheless prevented the horse from being able to eat anything either." The story was first glossed in the 1st century CE lexicon of Diogenianus as "The dog in the manger, concerning those who neither themselves use nor allow others to use: Insofar as the dog neither itself eats the barleycorns, nor allows the horse to". It was twice used in the following century by Greek writer Lucian: in "Remarks addressed to an illiterate book-fancier" and in his play "Timon the Misanthrope". One other contemporary poetic source is a paederastic epigram by Straton of Sardis in the