Text and Translation:
Of the cat The cat is called musio, mouse-catcher, because it is the enemy of mice. It is commonly called catus, cat, from captura, the act of catching. Others say it gets the name from capto, because it catches mice with its sharp eyes. For it has such piercing sight that it overcomes the dark of night with the gleam of light from its eyes. As a result, the Greek word catus means sharp, or cunning.
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 the weasel The weasel is called mustela, ‘a long mouse’, so to speak, for theon [telos] in Greek means ‘long’. It is cunning by nature; when it has produced its offspring in its nest, it carries them from place to place, settling them in a series of different locations.
It hunts snakes and mice. There are two kinds of weasel. One, of very different size from the other, lives in the forest. The Greeks call these ictidas; the other roams around in houses. Some say that weasels conceive through the ear and give birth through the mouth; others say, on the contrary, that they conceive through the mouth and give birth through the ear; it is said, also, that they are skilled in healing, so that if by chance their young are killed, and their parents succeed in finding them, they can bring their offspring back to life. Weasels signify the not inconsiderable number of people who listen willingly enough to the seed of the divine word but, caught up in their love of wordly things, ignore it and take no account of what they have heard.