[The hour] between dog and wolf, that is, dusk, when the two can’t be distinguished from each other, suggests a lot of other things besides the time of day… The hour in which… every being becomes his own shadow, and thus something other than himself. The hour of metamorphoses, when people half hope, half fear that a dog will become a wolf. The hour that comes down to us from at least as far back as the early Middle Ages, when country people believed that transformation might happen at any moment.
Jean Genet, Prisoner of Love (1986, trans. Barbara Bray)