Here's why:
* No Baboons: The original novel features gorillas as the main primate species. Tarzan is raised by a family of gorillas, and they play a significant role in the story.
* Adaptation Changes: The concept of baboons being Tarzan's friends is a common element in later adaptations of the story, like the Disney movie or the more recent Tarzan films.
While the baboons are a popular addition to the Tarzan lore, they were not originally part of the story.