Photo Day is the 3rd episode of Dino Girl Gauko.
It's photo day at school and Naoko tries to hide the blemish that she has under her nose. To sympathize with Naoko's predicament, Kana has the same problem. The two then try various ways to deal with their problem but to no avail. When it comes time for their photo to be taken, Naoko transforms into Gauko after Saito's attitude towards her. In the end, Naoko's photo is taken without the blemish, however, it's when she is as Gauko.