A Pomeranian called Boo has been heralded by internet critics as the world's cutest dog and even has his own Facebook page with over 4 million followers. Adding to his resume, he might just be Japan's unofficial hide-and-seek champion (although it is unknown if this is actually Boo or just a look-alike). Regardless, this cute ball of fur is sweeping the web! Can you spot him? (Be sure to click the image to see him in action!)