- Order: Saurischia
- Suborder: Theropoda
- Superfamily: Tail Hammer Wyvern
- Family: Duramboros
Males of this Brute Wyvern species thrive in the Misty Peaks of the Old World, and they are occasionally been seen in the Flooded Forest and Deserted Island of the New World as well. They also now have been seen in the Swamp.
Duramboros are giant herbivores that are specialized in feeding on trees. It is obvious that it is able to protect itself. The only monsters that would be capable of challenging this behemoth would have to be large predators, such as Zinogre. Duramboros are also occasionally seen in the Deserted Island and Flooded Forest where they come into contact with other large predators such as Lagiacrus, Brachydios, Nargacuga, Gobul, and Plesioth.
A Duramboros's most well-known feature is its hammer-like tail. Due to the constant pounding of their tailbone has worn into a spherical shape. Their massive hammer-like tail is used to knock down huge trees. Most fallen trees found in areas are actually caused by Duramboros. They also use their tail for defense against threats and will use their tail in more ways to help them fight threats such as that spin and to fly towards threats. The only downside to this is that after doing some of those attacks, they become highly vulnerable to a counter attack from threats. It uses its horns for intimidation and to charge threats dead on, like Diablos. A Duramboros's shell is incomparably thick to a point where most species can't even damage it. On its shell are moss and mushrooms, which grow on it. It was theorized that they use this to retain moisture and warmth but the moss actually serves as a shock absorber for older Duramboros. The mushrooms and moss serve as food if they aren't able to find any food. Inside the humps of Duramboros is both nutrients and fat, which they can burn a lot of when enraged so they can move faster and attack more violently.
Duramboros are very territorial to a point where if anything carelessly approaches them, they will attack and possibly even kill that creature without warning. Its actually a lot more aggressive compared to other predatory Brute Wyverns. After mating with males, females are known to gather in herds. In their herds, female Duramboros will construct nests and lay eggs. Once the young hatch, they are watched and guarded by the female herd, while the males wander around alone again. When a young male Duramboros reaches a certain age, they leave the herd and travel alone like the older males. These males are most commonly sighted in the Misty Peaks hunting grounds outside Yukumo Village sometimes causing trouble. During the fall, these herbivores eat whatever they can to prepare for winter. Sometimes they have been known to eat village huts or other wooden objects. In the winter months of the Misty Peaks, these giants burrow underground and hibernate. During this period of time, they utilize their fat reserves in their humps to wait out the winter.