Knobhead

The Knobhead is a species of large rhinoceros-like herbivorous mammals native to Africa. They are normally browsing herbivores that feed on leaves, shrubs, and fruit, but can occasionally feed on grass, roots, and tubers. Most species of knobheads have a length of about 4 m (13 ft), a height of 1.70 m (5.6 ft), and a weight up to 2 tonnes, but some are slightly larger by few inches and few pounds. Although they are very similar to rhinoceroses, laaras, and arsins in both size and shape, they are not closely related, since knobheads are part of a mammal group called Dinocerata, so knobheads have no closest living relatives. Its legs are robust to sustain the weight of the animal and are equipped with hoof-like claws. Moreover, a knobhead's sternum is made up of horizontal segments, unlike rhinos, which have compressed vertical segments. Its most unusual feature is its skull, which is both large and strongly built, but simultaneously flat and concave: this feature is rare and, apart from some laaras, not regularly characteristic of any other known mammal. Its cranial cavity is exceptionally small due the walls of the cranium being exceedingly thick. The weight of the skull is mitigated by numerous sinuses permeating the walls of the cranium, like those in an elephant's skull. The large upper canine teeth serve as formidable defensive weapons, and superficially resemble those of saber-toothed cats]]. Sexually dimorphic, the teeth are larger in males than in females. However, they also use them to pluck the aquatic plants from marshes that comprise their diet. The skulls of the males have six prominent knob-like ossicones that grow from the frontal region of the skull. They are normally used in defense and, during mating seasons, sexual display.