 Nonnus, in his "Dionysiaca", describes Echidna as being "hideous", with "horrible poison".According to Hesiod's "Theogony", the "terrible" and "lawless" Typhon, "was joined in love to [Echidna], the maid with glancing eyes" and she bore "fierce offspring".First there was Orthrus, the two-headed dog who guarded the Cattle of Geryon, second Cerberus, the multiheaded dog who guarded the gates of Hades, and third the Lernaean Hydra, the many-headed serpent who, when one of its heads was cut off, grew two more.