The Aberdeen Bestiary
I was looking for manuscripts with pictures - but bonus get the translations as well
http://www.abdn.ac.uk/bestiary/
Of mice
The mouse is a puny animal; its name, mus, comes from the Greek, the Latin word deriving from it. Others say mures, mice, because they are produced ex humore, from the damp soil, of the earth; for humus means earth and from that comes mus, mouse. Their liver grows bigger at full moon, like the tides rise then fall with the waning of the moon.
Of mice
The mouse is a puny animal; its name, mus, comes from the Greek, the Latin word deriving from it. Others say mures, mice, because they are produced ex humore, from the damp soil, of the earth; for humus means earth and from that comes mus, mouse. Their liver grows bigger at full moon, like the tides rise then fall with the waning of the moon.