How big was a extankosaurus rex?

Did Heterodontosaurus really eat plants? How many toes did the triceratops have on one foot? Who stronger trex or King Kong? Do you wish dragons exist? Is a t rex larger than a spineasaurus? Could oil come from dead people If they were buried under all the rocks and stuff like the dinosaurs? How many cm is a t-rex? Are dinosaurs the only reptiles to have hooves? Is pterodactyl a compound word? What is the difference between a dragon and a dinosaur? Is a pterodactyl a cold blooded or warmblooded? How does the allosaurus get its food? Were dinosaurs or birds the first beings? What species of mythical dragons are there? What mountains in the book eragon did eragon find saphiras egg? What dragon's egg is blue with a lightning bolt on it in DragonVale? What is the name of a largeplant-eating dinosaur with triangular plates on its back? How long was the skull of an adult apatosaurus in cm or in? Did cats live during the dinosaurs? What was the last dinosaur to go extinct?