Cutest Pomeranian Dog Boo's Best Photos of 2011

This year saw celebri-dog Boo continue his campaign for world cute-tification: he's an Internet sensation with more than 2.5 million Facebook fans, the subject of an Amazon best-selling book, and a calendar pinup model. Clearly, he's a pup of many (adorable) faces, so as the year draws to a close, we thought we would take a look back at his most memorable moments of cuteness.