【明報專訊】When a cat owner posted a photo of her cluttered, floor-to-ceiling bookshelves on Twitter and challenged her followers to find her cat among her books and knick-knacks, an interesting pattern emerged: those who had never lived with cats found it hard to locate the animal, while cat parents, already familiar with where this species like to hide — ''I know how their wicked little minds operate,'' noted one — could spot the kitty almost all at once.