Mark Zuckerberg's dog Beast, a Puli, has over 1.5 million fans on Facebook. And he might just be the richest dog on Earth!br br Beast's mother couldn't have guessed one of her brood would be adopted by the founder of Facebook. For a dog that looks like a rag, it's truly a rags to riches story. But like so many young pups unaccustomed to a life of privilege, Beast will face a litany of temptations.