With nearly 5 million "likes" on Facebook, a book out about him and a 2013 calendar to boot, Boo is one popular pup, legitimately dubbed "the world's cutest dog," whose sweet eyes and face — in ...

Boo! Facebook/Boo Today, a great world mystery was solved by Mike Isaac, a writer at tech news site AllThingsD. Isaac unmasked the owner of Boo, "the world's cutest dog." No, really.

But Boo isn't a reality TV star, actor or a pop singer - he's a pet dog. The five-year-old Pomeranian has the fame most celebrities dream of after amassing 1.79million fans on social networking ...