"Dog" by C418 was a Minecraft music disc added back in the alpha versions of the game. It pairs well with "Cat," another disc by C418, but has it's own unique spin to it. Having it in the game will not only bring back nostalgia for old players, but will introduce newer players to this wonderful song. Many people still listen to it on YouTube, and I know that they would be overjoyed to have their favorite C418 song back in the game.