Like Captain Olimar, Louie takes notes too, but his notes are about how to cook enemies. While Captain Olimar's notes would be useful to a scientist or biologist, Louie's would be useful to a chef. (However, probably not to a human chef, as many of the recipes seem disguisting to us.) Interestingly, Louie references ingredients found on Earth (cultivated in oxygen). These ingredients could not possibly be known by Louie, as Hocotate has a severely different climate. This is most likely because Hocotatian plants often have a similar appearance to those found on Earth so Louie uses the names he is familiar with for a completely different plant.
Example
"Eaten raw, this predator's luxurious legs are bold and full flavored. What a satisfying crunch!"