The date of composition of the Metamorphoses is uncertain. It has variously been considered by scholars as a youthful work preceding Apuleius' Apology of 158–159, or as the climax of his literary career, and perhaps as late as the 170s or 180s.[5] Apuleius adapted the story from a Greek original of which the author's name is said to be an otherwise unknown "Lucius of Patrae", also the name of the lead character and narrator.[6]
This Greek text by Lucius of Patrae has been lost, but there is Lucius or the Ass (Λούκιος ἢ ὄνος, Loukios ē onos), a similar tale of disputed authorship, traditionally attributed to the writer Lucian, a contemporary of Apuleius. This surviving Greek text appears to be an abridgement or epitome of Lucius of Patrae's text.[7]