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.
Boo rings in the New Year.
Boo is dashing in a tux, carrying the rings for a friend's wedding .
The Future's So Bright
Boo's way ahead of his time, rocking shades and a jacket in Pantone's 2012 color of the year, Tangerine Tango .
Rinse and Repeat
Even when you're a busy international superstar, you always should make time for personal hygiene.
Looking Good While Giving Back
Boo can make even a head scarf look fashionable (especially when it's for charity).
Boo lets his team spirit shine, looking awfully cute in the process!
A Model Citizen
What a looker! And the model is quite pretty, too.
Let's Get Physical
Even exercise can be fun when Boo's ready to play!
Ain't No Mountain High Enough
Boo proves that the mountaineer look is so in.
Boo always makes time for famous friends, especially designer Tory Burch.
Ray of Light
Nothing beats sunshine and a great Buddy.
Bringing Sexy Back
A rumpled-sheet boudoir photo shoot for all the lady Pomeranians out there.
If You Meet a Handsome Stranger
. . . Don't be afraid to take his arm!
Learning His ABZzzzzzz's
Always make time for beauty rest.
Tough Guy Chic
Boo's a little bit hip-hop, a little bit Halloween .
Sometimes a celebri-dog needs some me time.
If You're Going to San Francisco
Boo uses the scenery to highlight his best assets.
At the end of a long day, the best therapy comes from a comfy throw and cozy sweater.