The Japanese love their cats so it’s not surprising that they’ve created all sorts of odd toys to keep their felines happy and content. In this case, the Japanese probably noticed that cats liked sleeping in boxes, but ordinary cardboard boxes look boring. That’s why someone in Japan invented the shark house cat box.
This cardboard box looks like a shark so your cats can sleep peacefully within the jaws of a man-eating creature without threat or harm whatsoever. If your cats are going to sleep in a cardboard box, you might as well get one that looks interesting.