Anteosaurus is a massive predator. With a head over 2 feet long, a shoulder height of 4 feet with erect legs, 1600 pounds in weight, and a total body length of 20 feet (half of that being the tail), it resembles a T-Rex head on a lizard's body. It has a skull that's reinforced with massive knobs of bone, which allow it to headbutt powerfully. A powerful swimmer, fast runner, and capable climber, its only weakness is its low stamina. They are aggressive to anything their size, or when hungry.