“Pet blind boxes” are boxes in which there are living cats and dogs sold online and transported by a courier system. They are for sale at an incredibly cheap price. It happens in China. There is uproar about this because it is inherently very cruel. The animal welfare laws in China do not cover this in fact there are none to the best of my knowledge, pretty well. The postal system laws forbid it apparently. On Amazon they have pet blind boxes but they contain toys: plush toys. These nasty people have picked up that concept and used it to ship living animals. Can you believe it? It is shocking.