As the thing inched closer to the dead rabbit, sniffing and hissing, it seemed to drag with it a veil of shadows, so that she could not see it clearly even as she noticed certain details of its anatomy. She saw the line of feathers running down its bony spine, the talons like those of an owl, the slick skin of an eel, for this was a creature of impossibility, neither mammal nor bird but something in between that moved with the gliding smoothness of a snake.