Lolcats of the Middle Ages

"The mouse was not always the loser in these exchanges, however, especially in the imaginative realm of the marginal grotesque.  Sometimes you eat the mouse, the cat may have philosophized, and sometimes the mouse eats you.  The relationship between mice and cats, and the prospect of an organized mouse insurrection against the oppressor, was actively explored as a metaphor for human society."

From the British Library's Medieval and Earlier Manuscripts Blog.  Below: The mice storm the castle.