T. rex not into fast food according to a report in Nature vol. 415, p1018, 28 February 2002. Engineers from Stanford University studying the biomechanics of reptiles and birds hind legs to work out how much muscle is required for an animal to run have concluded T. rex would have needed an impossibly large amount of muscle in order to run. However, its large legs still meant, a fully grown T. rexcould walk at about 20km (12.5miles) an hour. The study has revived debate about whether T. rex was a hunter or scavenger. Andrew Biewener, an expert in animal movement at Harvard University suggests the inability to run, along with its tiny arms, made T. rex a scavenger only who ate only dead creatures. Other scientists counter claim that this study means other dinosaurs would have been equally slow so T. rexcould still have preyed on them.

Editorial Comment: An animal with tiny arms that couldn’t run would have no trouble eating plants or dead animals, but is an unlikely hunter, even if its potential prey are other large lumbering creatures. This biomechanical study, along with studies of T. rexteeth and jaws, better fits the Biblical history of animal diets in Genesis 1 – 9, i.e. all animals were originally vegetarian. By the time of Noah s flood Genesis reports the world had become full of violence and some animals were described as “unclean,” meaning they were associated with death and decay, i.e. scavengers. (Ref. T. rex, diet, scavenger)