The 'Bern Physiologus' is a 9th century illuminated copy of the Latin translation of the Physiologus. It was probably produced at Reims in France about 825-850. It is believed to be a copy of a 5th century manuscript. Many of its miniatures are set, unframed, into the text block, which was a characteristic of late-antique manuscripts. It is one of the oldest extant illustrated copies of the Physiologus.

The Physiologus is a didactic text written or compiled in Greek by an unknown author, in Alexandria