In addition to writing the preface and introduction, Poe made some significant changes to Wyatt's original text. Poe translated the French text by Georges Cuvier into English, worked on the accounts of the animals, constructed a new classification scheme, and organized the book.
Poe not only wrote the foreword and introduction but also made notable changes to Wyatt's initial manuscript. He translated Georges Cuvier's French text into English, reworked the animal descriptions, developed a novel categorization method, and assembled the publication.