In the video, posted by @rolothegoldenmountaindog, Rolo, the 8-week-old golden mountain dog, is revealed in all his glory with his black, white and tan coat, and his classic retriever smile.

The 10-month-old golden retriever has become a "social butterfly ... when one of her golden retrievers gave birth to puppies two weeks before St. Patrick's Day. One of the puppies, who's since ...