Silver Whiskers, a cat spirit with sleek, shimmering fur like a silver salmon, swam upstream into your home when you opened the window to let in the fresh air. It's now perched on your bookshelf, gazing at the river scene on the cover of a book with an air of curiosity. You realize that the only way to coax Silver Whiskers down is to mimic the calming sound of flowing water, or perhaps dangle a shiny, fish-shaped toy.