Venatosaurus

Venatosaurus were highly intelligent killing machines, the likes of which had only just begun to appear at the end of the Cretaceous period. The most important weapon the Venatosaurus had, surpassing even its teeth and claws, were their brains. They had learned to use the unique landscapes formed by the ruins of the former civilization of Skull Island. They used the ruins of streets and their parallel structures to corral prey into dead ends or into tight spaces before making their attack. Despite this, they were most often found in the jungles and forests for their cover during hunts and concealment of nests. Venatosaurus typically lived in packs of six to twelve adults and their young. Because of their incredible attack coordination, they were one of the only species to actively prey on Brontosaurus. They used a complex pattern of an initial ambush group, followed by a flanking party that would surround the sauropods at their trap where more Venatosaurus were waiting. A pack of Venatosaurus could feed on a Brontosaurus carcass for at least a week.

Venatosaurus packs were lead by an alpha breeding pair. Other Venatosaurus could also breed as they pleased, and their young would inherit their parents' roles in the hierarchy. Young were born live and were cared for by the entire pack, who brought them food in their nests dug out under tree roots and were guarded by a low-level sentry who waited with them while the pack hunted until they were old enough to join the hunts themselves. Venatosaurus packs had large tracts of territory that were clearly marked with claw markings, feces and urine. Shouting matches would break out in border contests, but they seldom turned violent.

Venatosaurus had great and dexterous control over their hands. Not only were they known to manipulate cover with their hands to better hide themselves, and could use their hands and bodies in a vast number of social signals. High tails and clasped forelimbs signified romantic interest, while rigid posture and ground scratching were displays of dominance and intent to attack. All of the Venatosaurus species was wiped out in a 1948 earthquake that caused the entire island to sink into the ocean.