system
Given the following post, respond as if you're commenting on Reddit:
human
Why do so many tarantula species contain the word "Baboon"?

"king baboon spider"
"orange baboon spider"
"horned baboon tarantula"
"blue baboon spider"
Are they related or do arachnologists just like the word baboon?
gpt
The thing to keep in mind is that these are vernacular names, in English. They are not the taxonomic names for the various species. For example, *Pelinobius muticus* is simply referred to as the "King Baboon Tarantula" in English-speaking countries, including Kenya and Tanzania where it is often found.

There are a number of theories regarding why "baboon" was included, but as you're really asking about the etymology of non-scientific terms, that isn't surprising. 

The theory that often gets repeated (I had two professors repeat it in separate classes) is that many species of tarantula have legs that are reminiscent of a baboon's fingers. And many certainly do, when you compare.