This papercraft is K.K. Slider (commonly known as K.K.), a dog who appears in all of the Animal Crossing games to date. the paper model is created by kamibox. His purpose is performing music for the player.
There are a total of 55 songs in the original Animal Crossing, 70 songs in Wild World, 75 in City Folk, and 91 in New Leaf. A full list of his songs can be found here. His birthday was revealed in Animal Crossing Plaza. Like other special characters that appear in Animal Crossing: New Leaf, he does not celebrate it. For more information please click here.
You can download the papercraft template here: Animal Crossing - K.K. Slider Free Papercraft Download