If the Internet has taught you anything, it's that there's no end to the bizarre things that cats do. Whether it's chasing things invisible to all other species or defying Newtonian law, cats are endlessly entertaining. Of course, they take it all very seriously. These cats are stepping up their sneakiness game with a variety of slinky, stealthy moves that would put any shinobi to shame. Are they stalking? Plotting? Playing? Or are they just as confused as we are about all this? 1. "Human! Can't you see I'm doing important surveillance work?" BoredPanda 2. "Soon..." BoredPanda 3. It takes...