 The "Theogony" next mentions an ambiguous "she", which might refer to Echidna, as the mother of the Chimera (a fire-breathing beast that was part lion, part goat, and had a snake-headed tail) with Typhon then being the father.While mentioning Cerberus and "other monsters" as being the offspring of Echidna and Typhon, the mythographer Acusilaus (6th century BC) adds the Caucasian Eagle that ate the liver of Prometheus.The mythographer Pherecydes of Athens (5th century BC) also names Prometheus' eagle, and adds Ladon (though Pherecydes does not use this name), the dragon that guarded the golden apples in the Garden of the Hesperides (according to Hesiod, the offspring of Ceto and Phorcys).