Shogun Ceanataur Ecology

Disclaimer: This is merely a plausible explanation for the monster(s) in this article, and should not be considered canon.

In-Game Information
A large Carapaceon with a giant monster's skull on its back. Its long, sharp pincers allow it to pierce volcanic bedrock and travel along ceilings. Sometimes, a precious and valuable pearl can be found inside its shell.

Taxonomy
Shogun are Carapaceons. However, they hardly resemble their cousins, the Daimyo. They are much thinner looking and have extremely long claws. These claws are relatively fragile and are usually kept "sheathed" unless the Shogun is enraged. Shoguns are actually regular Ceanataurs than have lived long enough to grow this large.

Habitat Range
Shoguns are found in Swamps and Volcanoes and nowhere else. Shoguns' claws help them dig into volcanic rock, which gives them a wide area to roam. It is still unknown if one of its claws that are broken will grow back, although this would make it hard for them to dig through volcanic rock. Some hunters think that it may need a certain amount of time until its broken claw will grow back. Note that there are no Ceanataurs present in the Swamp, and only stay in volcanic regions. This means that possibly all Shoguns in the Swamp zone are males or possibly females who haven't laid eggs.

Ecological Niche
Shoguns are high in the food-chain. Very little is powerful enough to prey on them, although weak or old individuals may sometimes find themselves at risk from more powerful predators such as Lavasioth. Despite this, they can more than hold their own against most creatures, even the powerful Elder Dragons Teostra and Lunastra. Shoguns themselves are filter feeders, sifting through soil for small organisms, although they are opportunists and will accept carrion or weak live prey.

Biological Adaptations
A Shogun Ceanataur's hard shell allows it to survive in the harsh volcano while suffering minimum dehydration. It is also a superb insulator and maintains the Shoguns' body temperature in the cool Swamp. Its claws are very powerful and very strong, able to burrow through even volcanic rock. Its offensive nature likely results from having to compete with larger predators like Gravios, or becoming prey to larger monsters. All the habitats they are seen in are harsh and filled with prey and predators, like Khezu and Gravios.