In reality, raptors were much smaller than in the movie, and if we're being real sticklers ... In BBC documentary, "The Real T-Rex," Clark is shown using the call of the Eurasian bittern and ...

rex’s calls often sound like a roar. “Large carnivores today, most of them are mammals, and roars are the sounds they produce,” says paleontologist, Julia Clarke. “But when we think about T.

rex looked, sounded, and ate ... Here's what the T. rex was really like when she hunted 66 million years ago, according to the experts at the AMNH.