Bibliography : Ibis
| Claudius Aelianus; A. F. Scholfield, trans. | On the Nature of Animals |
| Ron Baxter; Colum Hourihane, ed. | Learning from Nature: Lessons in Virtue and Vice in the Physiologus and Bestiaries |
| Janetta Rebold Benton | Medieval Menagerie: Animals in the Art of the Middle Ages |
| Anne Clark | Beasts and Bawdy |
| Michael J. Curley | Physiologus |
| Victor Henry Debidour | Le Bestiaire Sculpté du Moyen Age en France |
