Sylvester Stallone, the actor best known for his role in Rocky, just shared the most beautiful tribute to his dog Butkus. The 70-year-old writes: "When I was 26, totally broke, going nowhere VERY fast, owned two pair of pants that barely fit, shoes that had holes in them and dreams of being successful were as far away as the sun… But I had my dog, BUTKUS, my best friend, my confidant, who always laughed at my jokes, and put up with my moods, and was the one living thing that loved me for who I was!"