Read the whole article, it will help with the "cat" thing.
Successful children’s books tap into a child’s hunger for the safe made strange. They rejuvenate ancient folktales of order rising out of chaos. They speak to a child’s subconscious and form its collective experiences. Rowling and Meyer do all this, with enough metaphorical cats killed between them to fill a small cemetery. Whatever their literary merits, the books act as forerunners to a bewildering grown up world, where evil is dressed as glamour and where ordinary people are called to be heroes.