This one is the Adorable Japanese Playing Cards. We can see there is a dog in the cards. It should be a short story of a cute dog. We can see in each cards, the footprint of the dog will change with the change of numbers.
It came to me that every time I lose a dog they take a piece of my heart with them, and every new dog who comes into my life gifts me with a piece of their heart. ♥ If I live long enough all the components of my heart will be DOG.