Hey, everyone! This is one of my projects from a few months ago. This was actually my first MOC built with CCBS parts, and one of my few attempts at building Rahi. It is kind of bare bones. It isn't perfect, since I was getting the hang of the system, but I think it is pretty good (at least compared to some of my earlier projects...) Anyways, here is the Tarakona.
So, as you can see, the Tarakona is a sort of lizard/dinosaur/thing. Its four legged stance was inspired by the few moments from Jurassic World when the I. Rex was on all fours. I wanted to give it a heavy, armored aesthetic and a menacing stance as well. Now, on to the functions!
The first notable feature is the stud shooters. The shooters are hidden beneath the Tarakona's shell, but can be revealed by opening the shell.
The second and third features are the rearing function and the gearbox. The Tarakona alter its stance from a four-legged posture to a bipedal posture. It also has a gearbox to swing its front claws.
Some info: One of Okoto's rarest and most feared animals, the Tarakona dwells in the dark caves and expansive obsidian fields of the Region of Earth. Tarakona are rather slow, but they are incredibly strong, able to break apart boulders with their forelegs and to smash stone with their spiked tails. Normally crawling on four legs, the Tarakona can rear up on their hind legs when threatened. Tarakona hide is as tough as iron. Hidden beneath their wings (which cannot be used for flight) are crystal shooters which launch crystals that naturally form when Tarakona feed. Tarakona are typically rather quiet and docile, but if they are threatened they become extremely hostile. Shortly after his arrival, Onua wrestled an angered Tarakona which was on a rampage in a mining outpost. He and the villagers were barely able to defeat the monster (just for perspective). 
So, that is the Tarakona. If any of you are curious about how it is built or how its CCBS skeleton looks, check out the full album here: https://flic.kr/s/aHskgTvLp7
As always, comments, suggestions, and advice for improvement are appreciated. Thanks!
This is amazing!