It turns out that the cookies are actually made in two different bakeries, so they can end up tasting and looking differently.
The difference in Thin Mints is only slight, but the newest flavor, S'Mores, can be two entirely different cookies, depending on which bakery made them.
Cookies based on the same flavor can also have to different names. That's the case with Caramel Delites and Samoas and Tagalongs and Peanut Butter Patties.
The two bakeries are based in Louisville, Kentucky and Richmond, Virginia.
SEE ALSO: Here's your guide to Girl Scout cookie names and flavors