Oh, sweetie pie Reuben! Can't believe it's already been two years. I still remember my utter embarrassment at how nasty Carbon was to Reuben when they met the day after you picked him up and then a couple weeks later. I'm still convinced that Carbon has NO idea that the scary black puppy (who apparently deserved no toys and had to be put in his place) is now one of his best buddies.
Not that you were wondering, but Carbon is also two. He's staying two forever. So soon Reuben will be the older, more mature brother.