This guy wasn't named the "Tyrant King" for nothing. The apex predator of the late Cretaceous, T-Rex could bite off 500 pounds of meat in one gulp and didn't give a hadrosaur's butt if there were bones in the way — every part of the unlucky victim went down the hatch. Rexes likely both scavenged and hunted to nourish their massive 7-ton frame, as evidenced by their killer bite marks, which decorate their contemporary herbivores' fossils. They were such incredible beasts that they still fill us with fear and awe 65 million years after their extinction. Artwork by Cheung Chung Tat.