Remember the Where's Waldo books, elaborate illustrations of scenes through space in time, intended to make you search endlessly for a little, bespectacled man in a striped shirt and a beanie? As frustrating as those pictures were sometimes, they also provided hours of entertainment.
Think of this as the adult version of that -- except 10 times harder.
Each of these "Find the Cat" photos is more difficult than the last, for a number of reasons. For starters, the images aren't a particularly high resolution. Additionally, the cats are super tiny and well hidden in the scene. That being said, success is possible -- it just depends on how much time you can spend looking.