He has nearly two million fans and a book deal. 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 site Facebook. And Boo is also a hit with the ladies. He attracted the attention of Hollywood stars including Khloe Kardashian, who posted a picture of the dog on her blog last year and singer Ke$ha, who Tweeted that Boo was 'her new boyfriend.' Since then, Boo's Facebook page, launched in 2009, has gone viral, receiving...