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.
Example
"Eaten raw, this predator's luxurious legs are bold and full flavored. What a satisfying crunch!"
Somehow, I don't like the idea of eating a Titan Dweevil.