When Sylwester Wardega, a Polish Youtuber, decided to dress his dog Chica in an oversized spider costume and "unleash" her on unsuspecting passers-by in his hometown, an internet phenomenon was born. The so-called "Mutant Giant Spider Dog" was one of the most popular videos on YouTube in 2014--some achievement when you know that more than 1 billion unique users visit the video sharing site each month. Bringing together the most adorable and moving...