Oh, and the 8-legged freaks have started emerging from their holes in the Missouri Ozarks. Levi and Friends via YouTube Levi and Friends via YouTube loading... He said (and I quote) "these things aren't something you want to mess with". The truth is that Texas Brown Tarantulas aren't normally aggressive toward humans unless they become frightened. Why are Texas Brown Tarantulas most often seen in the Fall in Missouri?