T.rex was a champion WALKER and had long legs adapted to conserve energy while prowling for prey 

The T.rex and other huge predatory dinosaurs were the masters of ‘energy-efficient walking’ at lower speeds, giving them an edge over faster prey species, study finds.   Researchers from Mount Marty College, South Dakota used data on limb proportions, body mass and the gait of 70 species of therapod dinosaurs.  They found that for small to … Read more