The largest of the coastal predators, Tartarusaurus is a terror that the native human foraging sorties pray they will never run into. Huge and hungry, with bone-cracking jaws and powerful limbs that can propel the carnivore faster than any human can run for short distances, this brute can make short work of unwary human villagers. Fortunately, its range is limited to the far side of the island, where it subsists on other coastal reptiles, Skull Island fur seals, and limusaurs. Tartarusaurus also takes carrion when it can find it, possessing the strength to fight other meat-eaters off their food. The carnivore’s ability to stand on its hind limbs permit it to reach low cliff-nesting birds too, raiding their nests for eggs and chicks, little more than tiny snacks for the tank-like reptile.The seasonal nature of many of their coastal food sources, such as the Skull Island fur seals, means Tartarusaurus are nomadic, following the food. This brings them into frequent conflict with one another when individuals meet over kills. Large fat reserves accumulate in their tails, allowing the species to go without feeding for long periods. This stored energy will grant smaller Animals some reprieve in the battle to compete for survival when food is scarce.
Tartarusaurus has a thick, Rhinoceros-like hide that protects it from harm. Males fight each other for resources and access to females. Armed with thick, curved claws on each forelimb, males battle upright, balancing on their sturdy hind legs while they rake each other with these scythe-like claws. Despite the ferocity of the matches, their thick skins and resilient scales usually protect them from serious injury.