K.K. Birthday

"K.K. Birthday" is a K.K. Slider song that first appeared in and later reappeared in. It is considered a secret song, as it can only be obtained during a K.K. Slider performance on the player's birthday (or the Saturday before). It is not obtainable in Dōbutsu no Mori e+, but it is performed by K.K. Slider. None of the villagers own this song, although it will play in a villager's house on the day of their birthday; if the villager already had a stereo with a song playing, it will be replaced by this song.

The cover is a picture of a birthday cake with K.K. and Tangy on the top.