Notice how the Giganotosaurus' tongue bounces when it opens its mouth, or how its skin reacts when it roars. Those reactions all happened in-camera from this animatronic Giga puppet, built to look ...

So Giganotosaurus might've been slightly longer than T. rex, making it a contender for the largest carnivorous dinosaur. On the other hand, a 2014 paper published in the journal Plos Biology ...