How do you know there's a cat in the house?
1) If there's a basket somewhere, the cat is most likely to be inside it.
2) If you forget that you have a ball of yarn hanging around somewhere, your appartment will sure enough look like this when you wake up in the morning:
But even so, it's still quite nice to have a fellow yarn-lover ready to help you with every knit or crochet you try to get finished. Too bad this little furry friend only came for a visit over the weekend.