You can casually (and digitally) flip through 60 folios of this bestiary, essentially a medieval encyclopedia of animals, that was meant to impart moral lessons through descriptions and images of real and imaginary beasts. Male lions were seen as worthy reflections of God the Father. Licking your kin is certainly the fatherly thing to do.
Detail from a folio in the Northumberland Bestiary, about 1250–1260, English. Ink tinted with body color and translucent washes on parchment, bound between pasteboard and covered with red morocco. The J. Paul Getty Museum