The Bern Physiologus is a 9th century illuminated

Illuminated manuscript

An illuminated manuscript is a manuscript in which the text is supplemented by the addition of decoration, such as decorated initials, borders and miniature illustrations...

 copy of the Latin translation of the Physiologus. It was probably produced at Reims

Reims

Reims , a city in the Champagne-Ardenne region of France, lies east-northeast of Paris. Founded by the Gauls, it became a major city during the period of the Roman Empire....

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.