As you probably have figured out by now I do love a sprightly manuscript detail. Turns out the Getty Museum has one I've missed. From England, about mid 13th century, a couple of white cats go after brown mice, with mixed results - or perhaps it's a comic book-style telling of a cat's failed bid to hang on to mousie, as it shows up immediately underneath in its own vignette looking perky and even triumphant. I'm particularly impressed with the skilled elegance with which the cats are drawn, not a line wasted.
Of course copyright forbids my posting the image, but I'll send you right to it here.