The Avarusaurus, Avarusaurus populator, is a medium-sized, partly quadrupedal, omnivorous spinosaur from the jungles of Skull Island, similar in it lifestyle to a large bear. It measures 18-26 feet long.
An Avarusaurus is a surly opportunist that eats everything from carrion to fungi, live prey to rotten fruit. An intensely acidic stomach allows the big omnivore to bulk load whatever food it comes across for digestion later. The semi-quadrupedal Avarusaurus is solitary, but its tenacity and strength keep it safe from most other predators, like Foetodon.