I have never read anything about mythology creatures. I had a visual of what they looked like from Fianl Fantasy RPGS, but that was all.
Bernard Evslin paints the picture of their orgins with a great tale. Recommended reading for fun or study.
Cerberus the guardian of the gates of hell, but not by choice. Has a loveable side, despite the scary look of his three-headed body.
on page 49 there was some great artwork by Hieronymus Bosch The Musical Inferno. I figured I would share the artwork with you. It may hang on my wall at home oneday.