This achievement is earned for finding optional photo #2. If missed on the first run, you can "Play Episodes" and select specific parts of the Episode in order to find the missing optional photos through
collectibles mode. The following collectible is described and can be seen below:
[
0:44] - Optional Photo #2
Outside, look at the trash, interact with the donut, walk away from the bench and return to take a photo of the squirrel.
Collecting all 10 photos will also reward you with the following achievement: