Watchcat Rosie was a great, take-charge security guard but didn't quite master the art of undercover guard duty. She'd get under a sofa cover, acting as though she was hidden, even though I could see her tail and two of her paws. Once, she was almost completely hidden, except for one paw sticking out from the cover. I told her, "I see you!" It amused me that she retracted her paw quickly. I humored her for the rest of the morning, pretending not to know where she was. I thought, "Why not let her have this illusion?"