Bibliography : Bull
| László Bartosiewicz, ed.; Alice Mathea Choyke, ed. | Medieval Animals On The Move: Between Body And Mind |
| Janetta Rebold Benton | Medieval Menagerie: Animals in the Art of the Middle Ages |
| Jean Francois Brichant | Bestiare taurin: Symbole et mythe |
| Anne Clark | Beasts and Bawdy |
| Ann Payne | Medieval Beasts |
| Beryl Rowland | Blind Beasts: Chaucer's Animal World |
| Leo Wiener | Contribution Towards a History of Arabico-Gothic Culture, Volume IV: Physiologus Studies |